Using WHM/Cpanel How Do I Open Up A Port

Mar 4, 2007

I am managing a server and just learning how to do everything. It is a linux server running WHM/Cpanel. I need web scripts on this server to be able to connect to external SMTP servers. Therefore I need to open up port 25 (if it is not already).

How do I open ports on my server? Hopefully by using WHM/Cpanel (I am not too familiar with using the command line).


Open A Port

Jan 5, 2009

i have a linux machine with centos5 64 bit. I have a firewall and would like to know how to open and close ports? I have tried several different things and cant seem to open a port?

Is there a command line i can use in ssh to open a port? Or is there something i can addon to cpanel to control ports?

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May 2, 2009

What is the port used for OpenVZ VPS login?

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How Do I Check For An Open Port

Jul 29, 2009

we have a new windows 2008 server

How do i enable a port

I tried adding a TCP under the control panel, firewall exceptions

but its not working, how do i open port 1533 or check to see if its open

I tried running netsta- an in cmd prompt

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Bindshell Port Open 444

Oct 18, 2009

I got a msg from the server that a port 444 is open in my server, how could i know what the bindshell ports open in my server and how to close it please ?

Checking `bindshell'... INFECTED (PORTS: 444)
i use cpanel/csf firewall

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Port 5190 Open

Jul 18, 2007

I have a VPS running CentOS 4.4 which I have just been securing. It is running apache on port 80, BIND on port 53 and ssh on an atypical port. However, when I do a portscan with nmap I find that port 5190/tcp is open. There is no daemon listening on the port (I think it is for AIM?) and in any case iptables should refuse any connection on this port. Should I worry about this or is the port pretty safe to leave open?

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Check Whether Port Is Open Or Not

Feb 21, 2007

How do I check whether certain ports (like 25, 53, etc.) are open on my server or not ?

If it is not open how do I open the port ?

It is a CentOS server with no Control Panel

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Open Qmail On Alternate Port

Jun 13, 2007

Due to some circumstances out of my control, I've had to move from postfix to qmail. In postfix, I simply edited and added a new line to open it up on port 26 and 25 at the same time. In qmail it's not that easy. I followed the instructions at and it worked, but it takes about 15 seconds for thunderbird send the mail (it sits there saying 'connected to

Is there a better way of opening qmail on 26 or forwarding requests for 26 to 25?

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How To Check If This Port Is Blocked Or Open

Jun 29, 2009

I want to check if certain port is open and not blocked by my ISP how can I do that?

let's say I want to check if PPTP VPN port is open what software show me these info

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APF Firewall Port 80 Open But Unable To Download

Dec 21, 2008

I install and configure apf firewall on my VPS and i have a problem. The port 80 is open, my website it`s up and working but i can`t download anything.

[root@HERA ~]# wget ***/
--02:03:49-- ***/
Resolving ***...
Connecting to ***||:80...

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Open Port 3000 On Server For Canada Post

Feb 19, 2008

How can I open port 3000 on my linux server.

I need it for Canada Post live shipping quotes.

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How Can I Open Up Port 3303 To Enable External Connection?

Dec 18, 2008

I want to connect to my mysql server from an external server. How can I open up port 3303 to enable external connection?

I am using Plesk on virtuozzo, with AFP.

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Pure-ftp :: 425 Could Not Open Data Connection To Port 2535: Connection Timed Out

Apr 7, 2008

I have ftp server (pure-ftp). with firewall.

i allowed 20 and 21 port in "CSF" firewall

now when i or our client connect to the server connection done.

and the they fire dir or ls command they will receive error

"425 Could not open data connection to port 2535: Connection timed out"

what is the problem.i have already allowed passive port 2500:3500 then why i received this types of error

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How Do I Disable Open Relay In Cpanel

Jul 15, 2009

How Do I disable Open Relay in cpanel?

My "Top Email Relayers" is not empty in cpanel.

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Ports To Open For Web Server (PLESK, CPanel, Etc.)

Mar 11, 2008

Our new data center provided us with a Cisco ASA5510 firewall. We're setting up all new servers and will begin migrating all of our domains from our current co-lo to the new place.

At the old co-lo, they provided us a very basic BSD based router, and our servers all had external public facing IPs on them. Firewalling was handled at the server (Windows Firewall or Linux IPtables).

The new place is NAT'ing us, so our servers all have a 192.168.10.x address inside, and they map the external address for us through to the inside.

By default, they are locking everything down. I had to ask them to open ssh so I could remote into my CentOS box last night.

I'm not a network guru-- what ports are going to NEED to be opened so I can give them a list? This is a standard PLESK hosting server so http (80), https, ssh, ftp, pop3, smtp, what else? Anyone have a list?

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How To Increase Open Files Limit In Apache In Cpanel

Jul 14, 2008

How to increase the Open Files limits descriptor in Apache. In the earlier version of Cpanel, we had an option of Raise FD Size Limit to 16384, but the option no longer appear while rebuilding Apache. What is the way to do it and make the change permanent?

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Cpanel :: Connection Timed Out 110 Can't Open SMTP Stream

Dec 14, 2008

Message not sent. Server replied: Connection timed out 110 Can't open SMTP stream.

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What Is The Secure Port Of Whm And Cpanel?

Dec 5, 2008

what is the secure port of whm and cpanel?

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Running CPanel On Port 80

May 21, 2007

Here's an interesting article I wrote on how to use mod_proxy to allow your customers to access cPanel using port 80, in case other ports are blocked by a firewall.


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Oct 10, 2008

Here's my story: The landlord provides the internet for the house and it goes through a server which has squid installed. Squid in turn seems to block the internal port (or whatever the exact term for that is) for phpmyadmin or webmail in cpanel so I cannot access them.

At my reseller account at Hostgator they said they redirected that port to port80 via mod rewrite and that now works for me. I wonder how I would do the same thing on a dedicated server. I can't see what Hostgator did since it's happening out of my sight somewhere. Otherwise I would just replicate that on my box.

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CPanel, Email And Smtp Port 587

Aug 6, 2008

Is anyone successfully using cPanel with smtp port 587 and have a working email account?

After deciding that Plesk wasn't for me due to the lack of reference material in this and other forums, I had my hosting company, ServInt, delete my old vps and install a new one with cPanel.

Everything went fine until I configured my email. Just like with Plesk, I cannot access the smtp server via Outlook. I can ping it successfully, but it either terminates the connection or doesn't recognize the correct user name and password. With Plesk, it was a simple matter of enabling the use of port 587.

Not so with cPanel, at least for me. Even though the Exim service is enabled and another instance is enabled on port 587, I still can't connect. Thought it might be CFS, which is new to me with this install, so made sure it was disabled. Opened up a ticket with ServInt and even their techs can't get it functioning, so _they've_ opened up a ticket with cPanel.

Hence the title of this post, I can't beleive that I'm the only one whose had this problem before because blocking port 587 has been done by BellSouth/AT&T for many years now.

Nothing like having your company email down for over 6 hours to keep you up at night.

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Jun 2, 2008

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Redirect 8080 Requests To 80 Port - Tomcat Problem At CPanel Server

Jan 31, 2008

Yesterday I installed tomcat on a RHEL 4 + cPanel and httpd 2.0.63 server using easyapache3, process was ok, jsp pages are loading fine using , but servlets, are not working using, how ever, if I load it loads the servlet perfect.

I read something about redirecting all traffict from port 80 to 8080, but you know.. this is a shared server, and that would affect all customers on the server.

So, mod_jk seems to be the only solution, now I read many documents over the web, but no one seems to be working to configure apache2 and mod_jk that is installed using easyapache3 script.

In my httpd.conf file, i have this:

LoadModule jk_module modules/
Include "/usr/local/apache/conf/jk.conf"
At jk.conf i have this content: ...

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Email Server Port- How To Change/add Port For SMTP

Feb 19, 2008

Currently I am using Linux + cPAnel and using the port 25 for email sevrer. Currently we facing 1 problem is, some user's ISP is not support port. May I know how can I add additional port into server and allow users to send mail by different port?

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Did Port 80 Port To 7080, But Not Working When Login

Jun 21, 2009

I have an office internal website and I opened a port in the gateway of my office (7080) to this website (server )'s 80 port. That makes this website open to public as office has static IP. And then when I view the site from home . it's fine. But when I tried to login, the site is using a pop-up, I guess it's http authentciation, login, I was redirected to a url without my port number any more, that stops my access to the site as obviously I would.

How can I keep my connection/port number ...?

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Jun 18, 2008

about the NIC and switch,

there are giga port vs mega port,

in your experience,do they really be different?

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Jun 10, 2007

I recently changed my SSH port, but locked myself out when my APF firewall was installed.

Where would I got to add a custom port inside the APF's config file?

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Oct 4, 2007

Is there a way to exploit openssl? someone came to me asking me for a job on and i said no. They then uploaded a remote view script to exploit perl and gain access. I patched that. Then he again said that he can exploit through openssl. I thaught open ssl was security itself? He then told me that he can gain access through php sites to root? Is that possible? We have phpsafemode set to off because we run whmcs and it requires it to be off. He said he can hack us through that aswell. Is this guy just bluffing or can this seriously be done? Like i said this is why i have 2 server admins...

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Open Relay

Mar 8, 2007

Somehow I've opened up my postfix server to act as an open relay and it's already being taken advantage of. The following is my postconf

2bounce_notice_recipient = postmaster
access_map_reject_code = 554
address_verify_default_transport = $default_transport
address_verify_local_transport = $local_transport
address_verify_map =
address_verify_negative_cache = yes
address_verify_negative_expire_time = 3d
address_verify_negative_refresh_time = 3h
address_verify_poll_count = 3
address_verify_poll_delay = 3s
address_verify_positive_expire_time = 31d
address_verify_positive_refresh_time = 7d
address_verify_relay_transport = $relay_transport
address_verify_relayhost = $relayhost
address_verify_sender = postmaster
address_verify_sender_dependent_relayhost_maps = $sender_dependent_relayhost_maps
address_verify_service_name = verify
address_verify_transport_maps = $transport_maps
address_verify_virtual_transport = $virtual_transport
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
allow_mail_to_commands = alias, forward
allow_mail_to_files = alias, forward
allow_min_user = no
allow_percent_hack = yes
allow_untrusted_routing = no
alternate_config_directories =
always_bcc =
anvil_rate_time_unit = 60s
anvil_status_update_time = 600s
append_at_myorigin = yes
append_dot_mydomain = yes
application_event_drain_time = 100s
authorized_flush_users = static:anyone
authorized_mailq_users = static:anyone
authorized_submit_users = static:anyone
backwards_bounce_logfile_compatibility = yes
berkeley_db_create_buffer_size = 16777216
berkeley_db_read_buffer_size = 131072
best_mx_transport =
biff = yes
body_checks =
body_checks_size_limit = 51200
bounce_notice_recipient = postmaster
bounce_queue_lifetime = 5d
bounce_service_name = bounce
bounce_size_limit = 50000
bounce_template_file =
broken_sasl_auth_clients = yes
canonical_classes = envelope_sender, envelope_recipient, header_sender, header_recipient
canonical_maps = hash:/etc/postfix/canonical
cleanup_service_name = cleanup
command_directory = /usr/sbin
command_execution_directory =
command_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
command_time_limit = 1000s
config_directory = /etc/postfix
connection_cache_protocol_timeout = 5s
connection_cache_service_name = scache
connection_cache_status_update_time = 600s
connection_cache_ttl_limit = 2s
content_filter =
daemon_directory = /usr/libexec/postfix
daemon_timeout = 18000s
debug_peer_level = 2
debug_peer_list =
default_database_type = hash
default_delivery_slot_cost = 5
default_delivery_slot_discount = 50
default_delivery_slot_loan = 3
default_destination_concurrency_limit = 20
default_destination_recipient_limit = 50
default_extra_recipient_limit = 1000
default_minimum_delivery_slots = 3
default_privs = nobody
default_process_limit = 100
default_rbl_reply = $rbl_code Service unavailable; $rbl_class [$rbl_what] blocked using $rbl_domain${rbl_reason?; $rbl_reason}
default_recipient_limit = 10000
default_transport = smtp
default_verp_delimiters = +=
defer_code = 450
defer_service_name = defer
defer_transports =
delay_logging_resolution_limit = 2
delay_notice_recipient = postmaster
delay_warning_time = 0h
deliver_lock_attempts = 20
deliver_lock_delay = 1s
disable_dns_lookups = no
disable_mime_input_processing = no
disable_mime_output_conversion = no
disable_verp_bounces = no
disable_vrfy_command = no
dont_remove = 0
double_bounce_sender = double-bounce
duplicate_filter_limit = 1000
empty_address_recipient = MAILER-DAEMON
enable_original_recipient = yes
error_notice_recipient = postmaster
error_service_name = error
execution_directory_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
expand_owner_alias = no
export_environment = TZ MAIL_CONFIG LANG
fallback_transport =
fallback_transport_maps =
fast_flush_domains = $relay_domains
fast_flush_purge_time = 7d
fast_flush_refresh_time = 12h
fault_injection_code = 0
flush_service_name = flush
fork_attempts = 5
fork_delay = 1s
forward_expansion_filter = 1234567890!@%-_=+:,./abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
forward_path = $home/.forward${recipient_delimiter}${extension}, $home/.forward
frozen_delivered_to = yes
hash_queue_depth = 1
hash_queue_names = deferred, defer
header_address_token_limit = 10240
header_checks =
header_size_limit = 102400
helpful_warnings = yes
home_mailbox =
hopcount_limit = 50
html_directory = no
ignore_mx_lookup_error = no
in_flow_delay = 1s
inet_interfaces = all
inet_protocols = ipv4
initial_destination_concurrency = 5
internal_mail_filter_classes =
invalid_hostname_reject_code = 501
ipc_idle = 100s
ipc_timeout = 3600s
ipc_ttl = 1000s
line_length_limit = 2048
lmtp_bind_address =
lmtp_bind_address6 =
lmtp_cname_overrides_servername = no
lmtp_connect_timeout = 0s
lmtp_connection_cache_destinations =
lmtp_connection_cache_on_demand = yes
lmtp_connection_cache_time_limit = 2s
lmtp_connection_reuse_time_limit = 300s
lmtp_data_done_timeout = 600s
lmtp_data_init_timeout = 120s
lmtp_data_xfer_timeout = 180s
lmtp_defer_if_no_mx_address_found = no
lmtp_destination_concurrency_limit = $default_destination_concurrency_limit
lmtp_destination_recipient_limit = $default_destination_recipient_limit
lmtp_discard_lhlo_keyword_address_maps =
lmtp_discard_lhlo_keywords =
lmtp_enforce_tls = no
lmtp_generic_maps =
lmtp_host_lookup = dns
lmtp_lhlo_name = $myhostname
lmtp_lhlo_timeout = 300s
lmtp_line_length_limit = 990
lmtp_mail_timeout = 300s
lmtp_mx_address_limit = 5
lmtp_mx_session_limit = 2
lmtp_pix_workaround_delay_time = 10s
lmtp_pix_workaround_threshold_time = 500s
lmtp_quit_timeout = 300s
lmtp_quote_rfc821_envelope = yes
lmtp_randomize_addresses = yes
lmtp_rcpt_timeout = 300s
lmtp_rset_timeout = 20s
lmtp_sasl_auth_enable = no
lmtp_sasl_mechanism_filter =
lmtp_sasl_password_maps =
lmtp_sasl_path =
lmtp_sasl_security_options = noplaintext, noanonymous
lmtp_sasl_tls_security_options = $lmtp_sasl_security_options
lmtp_sasl_tls_verified_security_options = $lmtp_sasl_tls_security_options
lmtp_sasl_type = cyrus
lmtp_send_xforward_command = no
lmtp_sender_dependent_authentication = no
lmtp_skip_5xx_greeting = yes
lmtp_starttls_timeout = 300s
lmtp_tcp_port = 24
lmtp_tls_CAfile =
lmtp_tls_CApath =
lmtp_tls_cert_file =
lmtp_tls_dcert_file =
lmtp_tls_dkey_file = $lmtp_tls_dcert_file
lmtp_tls_enforce_peername = yes
lmtp_tls_exclude_ciphers =
lmtp_tls_key_file = $lmtp_tls_cert_file
lmtp_tls_loglevel = 0
lmtp_tls_mandatory_ciphers = medium
lmtp_tls_mandatory_exclude_ciphers =
lmtp_tls_mandatory_protocols = SSLv3, TLSv1
lmtp_tls_note_starttls_offer = no
lmtp_tls_per_site =
lmtp_tls_policy_maps =
lmtp_tls_scert_verifydepth = 5
lmtp_tls_secure_cert_match = nexthop
lmtp_tls_security_level =
lmtp_tls_session_cache_database =
lmtp_tls_session_cache_timeout = 3600s
lmtp_tls_verify_cert_match = hostname
lmtp_use_tls = no
lmtp_xforward_timeout = 300s
local_command_shell =
local_destination_concurrency_limit = 2
local_destination_recipient_limit = 1
local_header_rewrite_clients = permit_inet_interfaces
local_recipient_maps = proxy:unix:passwd.byname $alias_maps
local_transport = local:$myhostname
luser_relay =
mail_name = Postfix
mail_owner = postfix
mail_release_date = 200600825
mail_spool_directory = /var/mail
mail_version = 2.3.3
mailbox_command =
mailbox_command_maps =
mailbox_delivery_lock = fcntl, dotlock
mailbox_size_limit = 51200000
mailbox_transport =
mailbox_transport_maps =
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
maps_rbl_domains =
maps_rbl_reject_code = 554
masquerade_classes = envelope_sender, header_sender, header_recipient
masquerade_domains =
masquerade_exceptions =
max_idle = 100s
max_use = 100
maximal_backoff_time = 4000s
maximal_queue_lifetime = 5d
message_reject_characters =
message_size_limit = 10240000
message_strip_characters =
milter_command_timeout = 30s
milter_connect_macros = j {daemon_name} v
milter_connect_timeout = 30s
milter_content_timeout = 300s
milter_data_macros = i
milter_default_action = tempfail
milter_end_of_data_macros = i
milter_helo_macros = {tls_version} {cipher} {cipher_bits} {cert_subject} {cert_issuer}
milter_macro_daemon_name = $myhostname
milter_macro_v = $mail_name $mail_version
milter_mail_macros = i {auth_type} {auth_authen} {auth_author} {mail_addr}
milter_protocol = 2
milter_rcpt_macros = i {rcpt_addr}
milter_unknown_command_macros =
mime_boundary_length_limit = 2048
mime_header_checks = $header_checks
mime_nesting_limit = 100
minimal_backoff_time = 1000s
multi_recipient_bounce_reject_code = 550
mydestination = localhost.$mydomain, localhost, $mydomain, $myhostname
mydomain =
myhostname =
mynetworks =
mynetworks_style = subnet
myorigin = $myhostname
nested_header_checks = $header_checks
newaliases_path = /usr/bin/newaliases.postfix
non_fqdn_reject_code = 504
non_smtpd_milters =
notify_classes = resource, software
owner_request_special = yes
parent_domain_matches_subdomains = debug_peer_list,fast_flush_domains,mynetworks,permit_mx_backup_networks,qmqpd_authorized_clients,relay_domains,smtpd_access_maps
permit_mx_backup_networks =
pickup_service_name = pickup
plaintext_reject_code = 450
prepend_delivered_header = command, file, forward
process_id_directory = pid
propagate_unmatched_extensions = canonical, virtual
proxy_interfaces =
proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks
qmgr_clog_warn_time = 300s
qmgr_fudge_factor = 100
qmgr_message_active_limit = 20000
qmgr_message_recipient_limit = 20000
qmgr_message_recipient_minimum = 10
qmqpd_authorized_clients =
qmqpd_error_delay = 1s
qmqpd_timeout = 300s
queue_directory = /var/spool/postfix
queue_file_attribute_count_limit = 100
queue_minfree = 0
queue_run_delay = 1000s
queue_service_name = qmgr
rbl_reply_maps =
readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES
receive_override_options =
recipient_bcc_maps =
recipient_canonical_classes = envelope_recipient, header_recipient
recipient_canonical_maps =
recipient_delimiter =
reject_code = 554
relay_clientcerts =
relay_destination_concurrency_limit = $default_destination_concurrency_limit
relay_destination_recipient_limit = $default_destination_recipient_limit
relay_domains = $mydestination
relay_domains_reject_code = 554
relay_recipient_maps =
relay_transport = relay
relayhost =
relocated_maps =
remote_header_rewrite_domain =
require_home_directory = no
resolve_dequoted_address = yes
resolve_null_domain = no
resolve_numeric_domain = no
rewrite_service_name = rewrite
sample_directory = /usr/share/doc/postfix-2.3.3/samples
sender_bcc_maps =
sender_canonical_classes = envelope_sender, header_sender
sender_canonical_maps = hash:/etc/postfix/canonical
sender_dependent_relayhost_maps =
sendmail_path = /usr/sbin/sendmail.postfix
service_throttle_time = 60s
setgid_group = postdrop
show_user_unknown_table_name = yes
showq_service_name = showq
smtp_always_send_ehlo = yes
smtp_bind_address =
smtp_bind_address6 =
smtp_cname_overrides_servername = no
smtp_connect_timeout = 30s
smtp_connection_cache_destinations =
smtp_connection_cache_on_demand = yes
smtp_connection_cache_time_limit = 2s
smtp_connection_reuse_time_limit = 300s
smtp_data_done_timeout = 600s
smtp_data_init_timeout = 120s
smtp_data_xfer_timeout = 180s
smtp_defer_if_no_mx_address_found = no
smtp_destination_concurrency_limit = $default_destination_concurrency_limit
smtp_destination_recipient_limit = $default_destination_recipient_limit
smtp_discard_ehlo_keyword_address_maps =
smtp_discard_ehlo_keywords =
smtp_enforce_tls = no
smtp_fallback_relay = $fallback_relay
smtp_generic_maps =
smtp_helo_name = $myhostname
smtp_helo_timeout = 300s
smtp_host_lookup = dns
smtp_line_length_limit = 990
smtp_mail_timeout = 300s
smtp_mx_address_limit = 5
smtp_mx_session_limit = 2
smtp_never_send_ehlo = no
smtp_pix_workaround_delay_time = 10s
smtp_pix_workaround_threshold_time = 500s
smtp_quit_timeout = 300s
smtp_quote_rfc821_envelope = yes
smtp_randomize_addresses = yes
smtp_rcpt_timeout = 300s
smtp_rset_timeout = 20s
smtp_sasl_auth_enable = no
smtp_sasl_mechanism_filter =
smtp_sasl_password_maps =
smtp_sasl_path =
smtp_sasl_security_options = noplaintext, noanonymous
smtp_sasl_tls_security_options = $smtp_sasl_security_options
smtp_sasl_tls_verified_security_options = $smtp_sasl_tls_security_options
smtp_sasl_type = cyrus
smtp_send_xforward_command = no
smtp_sender_dependent_authentication = no
smtp_skip_5xx_greeting = yes
smtp_skip_quit_response = yes
smtp_starttls_timeout = 300s
smtp_tls_CAfile =
smtp_tls_CApath =
smtp_tls_cert_file =
smtp_tls_dcert_file =
smtp_tls_dkey_file = $smtp_tls_dcert_file
smtp_tls_enforce_peername = yes
smtp_tls_exclude_ciphers =
smtp_tls_key_file = $smtp_tls_cert_file
smtp_tls_loglevel = 0
smtp_tls_mandatory_ciphers = medium
smtp_tls_mandatory_exclude_ciphers =
smtp_tls_mandatory_protocols = SSLv3, TLSv1
smtp_tls_note_starttls_offer = no
smtp_tls_per_site =
smtp_tls_policy_maps =
smtp_tls_scert_verifydepth = 5
smtp_tls_secure_cert_match = nexthop, dot-nexthop
smtp_tls_security_level =
smtp_tls_session_cache_database =
smtp_tls_session_cache_timeout = 3600s
smtp_tls_verify_cert_match = hostname
smtp_use_tls = no
smtp_xforward_timeout = 300s
smtpd_authorized_verp_clients = $authorized_verp_clients
smtpd_authorized_xclient_hosts =
smtpd_authorized_xforward_hosts =
smtpd_banner = $myhostname ESMTP $mail_name
smtpd_client_connection_count_limit = 50
smtpd_client_connection_rate_limit = 0
smtpd_client_event_limit_exceptions = ${smtpd_client_connection_limit_exceptions:$mynetworks}
smtpd_client_message_rate_limit = 0
smtpd_client_new_tls_session_rate_limit = 0
smtpd_client_recipient_rate_limit = 0
smtpd_client_restrictions =
smtpd_data_restrictions =
smtpd_delay_open_until_valid_rcpt = yes
smtpd_delay_reject = yes
smtpd_discard_ehlo_keyword_address_maps =
smtpd_discard_ehlo_keywords =
smtpd_end_of_data_restrictions =
smtpd_enforce_tls = no
smtpd_error_sleep_time = 1s
smtpd_etrn_restrictions =
smtpd_expansion_filter = 40!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwxyz{|}~
smtpd_forbidden_commands = CONNECT GET POST
smtpd_hard_error_limit = 20
smtpd_helo_required = no
smtpd_helo_restrictions =
smtpd_history_flush_threshold = 100
smtpd_junk_command_limit = 100
smtpd_milters =
smtpd_noop_commands =
smtpd_null_access_lookup_key = <>
smtpd_peername_lookup = yes
smtpd_policy_service_max_idle = 300s
smtpd_policy_service_max_ttl = 1000s
smtpd_policy_service_timeout = 100s
smtpd_proxy_ehlo = $myhostname
smtpd_proxy_filter =
smtpd_proxy_timeout = 100s
smtpd_recipient_limit = 1000
smtpd_recipient_overshoot_limit = 1000
smtpd_recipient_restrictions = permit_mynetworks permit_sasl_authenticated reject_unauth_destination
smtpd_reject_unlisted_recipient = yes
smtpd_reject_unlisted_sender = no
smtpd_restriction_classes =
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = no
smtpd_sasl_exceptions_networks =
smtpd_sasl_local_domain =
smtpd_sasl_path = smtpd
smtpd_sasl_security_options = noanonymous
smtpd_sasl_tls_security_options = $smtpd_sasl_security_options
smtpd_sasl_type = cyrus
smtpd_sender_login_maps =
smtpd_sender_restrictions =
smtpd_soft_error_limit = 10
smtpd_starttls_timeout = 300s
smtpd_timeout = 300s
smtpd_tls_CAfile =
smtpd_tls_CApath =
smtpd_tls_always_issue_session_ids = yes
smtpd_tls_ask_ccert = no
smtpd_tls_auth_only = no
smtpd_tls_ccert_verifydepth = 5
smtpd_tls_cert_file =
smtpd_tls_dcert_file =
smtpd_tls_dh1024_param_file =
smtpd_tls_dh512_param_file =
smtpd_tls_dkey_file = $smtpd_tls_dcert_file
smtpd_tls_exclude_ciphers =
smtpd_tls_key_file = $smtpd_tls_cert_file
smtpd_tls_loglevel = 0
smtpd_tls_mandatory_ciphers = medium
smtpd_tls_mandatory_exclude_ciphers =
smtpd_tls_mandatory_protocols = SSLv3, TLSv1
smtpd_tls_received_header = no
smtpd_tls_req_ccert = no
smtpd_tls_security_level =
smtpd_tls_session_cache_database =
smtpd_tls_session_cache_timeout = 3600s
smtpd_tls_wrappermode = no
smtpd_use_tls = no
soft_bounce = no
stale_lock_time = 500s
strict_7bit_headers = no
strict_8bitmime = no
strict_8bitmime_body = no
strict_mime_encoding_domain = no
strict_rfc821_envelopes = no
sun_mailtool_compatibility = no
swap_bangpath = yes
syslog_facility = mail
syslog_name = postfix
tls_daemon_random_bytes = 32
tls_export_cipherlist = ALL:+RC4:@STRENGTH
tls_high_cipherlist = !EXPORT:!LOW:!MEDIUM:ALL:+RC4:@STRENGTH
tls_low_cipherlist = !EXPORT:ALL:+RC4:@STRENGTH
tls_medium_cipherlist = !EXPORT:!LOW:ALL:+RC4:@STRENGTH
tls_null_cipherlist = !aNULL:eNULL+kRSA
tls_random_bytes = 32
tls_random_exchange_name = ${config_directory}/prng_exch
tls_random_prng_update_period = 3600s
tls_random_reseed_period = 3600s
tls_random_source = dev:/dev/urandom
trace_service_name = trace
transport_maps =
transport_retry_time = 60s
trigger_timeout = 10s
undisclosed_recipients_header = To: undisclosed-recipients:;
unknown_address_reject_code = 450
unknown_client_reject_code = 450
unknown_hostname_reject_code = 450
unknown_local_recipient_reject_code = 550
unknown_relay_recipient_reject_code = 550
unknown_virtual_alias_reject_code = 550
unknown_virtual_mailbox_reject_code = 550
unverified_recipient_reject_code = 450
unverified_sender_reject_code = 450
verp_delimiter_filter = -=+
virtual_alias_domains = $virtual_alias_maps
virtual_alias_expansion_limit = 1000
virtual_alias_maps = hash:/etc/postfix/virtual
virtual_alias_recursion_limit = 1000
virtual_destination_concurrency_limit = $default_destination_concurrency_limit
virtual_destination_recipient_limit = $default_destination_recipient_limit
virtual_gid_maps =
virtual_mailbox_base =
virtual_mailbox_domains = $virtual_mailbox_maps
virtual_mailbox_limit = 51200000
virtual_mailbox_lock = fcntl
virtual_mailbox_maps =
virtual_minimum_uid = 100
virtual_transport = virtual
virtual_uid_maps =

Any help is very much appreciated.

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Firewall V/s Open

May 23, 2009

i would be interested in knowing like what would you prefer for your dedicated server? i.e Behind a firewall or on public network. Can anyone experienced provide pros and cons on this one?

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Apr 14, 2009

I bought two Dell R200 because they was extremely cheap.

My target is Open Source SAN with active/passive setup.

Now i was wondering what RAID-level I should go for.

I will use 1TB SATA-II disks.

1) RAID-1 in both servers and mirror each other with DRBD.
With this setup i have like double RAID-1 so i lose lots of disk space.
4 disks -> 1TB

2) No-raid at all and i will mirror data with DRBD.
4 disks -> 2TB

Then there is change to go for RAID-5. Theres enough space to put third disk in that case

3) RAID-5 in both servers. Mirrors data with DRBD.
6 disks -> 2TB but more performance.

But in every setup i lose space more then i would like to.

Actually i dont need space more then 1TB, but i would like to get best possible redundancy and most space available i could.

Also need to remember that those servers does not support hot-plug HDs so in case there is disk-failure i need to be able to shutdown one server and iSCSI should still be up and running.

Of course theres change to make it active/active.

I was thinking that if I go for the RAID-5 I will make LVM-VG on both nodes (san-vg1 and san-vg2) and use it 50/50.

In case of fail both VG's will be used from working node.

Im going to use Debian Lenny I guess..

I was looking for OpenFiler because of the GUI, but im familiar with Debian and have always done everything from cmd.

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