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Using WHM/Cpanel How Do I Open Up A Port


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).


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connection_cache_ttl_limit = 2s
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daemon_timeout = 18000s
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debug_peer_list =
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default_process_limit = 100
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delay_notice_recipient = postmaster
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deliver_lock_attempts = 20
deliver_lock_delay = 1s
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inet_protocols = ipv4
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internal_mail_filter_classes =
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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 =
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lmtp_connection_cache_time_limit = 2s
lmtp_connection_reuse_time_limit = 300s
lmtp_data_done_timeout = 600s
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lmtp_data_xfer_timeout = 180s
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lmtp_destination_recipient_limit = $default_destination_recipient_limit
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lmtp_discard_lhlo_keywords =
lmtp_enforce_tls = no
lmtp_generic_maps =
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lmtp_mail_timeout = 300s
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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 =
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lmtp_tls_security_level =
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masquerade_exceptions =
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max_use = 100
maximal_backoff_time = 4000s
maximal_queue_lifetime = 5d
message_reject_characters =
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message_strip_characters =
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milter_connect_timeout = 30s
milter_content_timeout = 300s
milter_data_macros = i
milter_default_action = tempfail
milter_end_of_data_macros = i
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milter_macro_daemon_name = $myhostname
milter_macro_v = $mail_name $mail_version
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mime_nesting_limit = 100
minimal_backoff_time = 1000s
multi_recipient_bounce_reject_code = 550
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plaintext_reject_code = 450
prepend_delivered_header = command, file, forward
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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
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relay_destination_concurrency_limit = $default_destination_concurrency_limit
relay_destination_recipient_limit = $default_destination_recipient_limit
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remote_header_rewrite_domain =
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resolve_dequoted_address = yes
resolve_null_domain = no
resolve_numeric_domain = no
rewrite_service_name = rewrite
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sender_canonical_maps = hash:/etc/postfix/canonical
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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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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.

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i saw an older post, tried everything but nothing works x_X

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Here' what my named.conf looks like...

----------------

controls {
inet 127.0.0.1 allow { localhost; } keys { "rndckey"; };
};


acl "trusted" {
1.2.3.4; 2.3.4.5; 127.0.0.1;
};

options {
directory "/var/named/";
allow-transfer { IP's that are allowed (slaves/master);
// query-source address * port 53;
version "not currently available";
allow-recursion { trusted; };
allow-notify { trusted; };
allow-transfer { trusted; };
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-----------------

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I created a (dv) account with Media Temple and my starting domain name becomes my name servers... Now they setup on there DNS server a reverse lookup for mydomain.com, but not for any of the domain names which go under it.

They won't setup a reverse lookup for any of your sub domains, unless they have a dedicated IP address, which costs $1.00 per month per IP address.

So what this means is say one of your sub-domains sends an email to myclient.com and it so happens that myclient.com like many other domains does a reverse lookup on incoming emails to verify its not spam, but since the reverse lookup doesn't exist, your sub domain gets an error message saying the email can't be delivered.

I emailed them and there first response was ....

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Basically mysql is behaving very very intermittently. Crashes were every 4 hours, I've brought them down to once every 8 or so hours but mysql keeps dying.

the error log will show the same routine each time.

on mysql start:

Quote:

091101 21:58:03 [Warning] option 'open_files_limit': unsigned value 120000 adjusted to 65535
091101 21:58:03 [Warning] Could not increase number of max_open_files to more than 65535 (request: 200110)
091101 21:58:03 [Note] /usr/sbin/mysqld: ready for connections.

Then we'll see errors due to crashed databases:

Quote:

091102 0:33:07 [ERROR] /usr/sbin/mysqld: Incorrect information in file: './<nameofdatabase.frm>'

following this a heap of:

Quote:

091102 0:36:35 [ERROR] /usr/sbin/mysqld: Can't open file: '>another database here.frm>
091102 0:36:36 [ERROR] /usr/sbin/mysqld: Sort aborted
091102 0:36:52 [ERROR] /usr/sbin/mysqld: Sort aborted
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[url]

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I ran my mail server through an SMTP diagnostic tool at:

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contents of my.cnf

[mysqld]
safe-show-database
#old_passwords
back_log = 50
skip-innodb
max_connections = 500
key_buffer_size = 144M
myisam_sort_buffer_size = 64M
join_buffer_size = 1M
read_buffer_size = 1M
sort_buffer_size = 2M
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thread_cache_size = 256
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tmp_table_size = 64M
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max_allowed_packet = 64M
net_buffer_length = 16384
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thread_concurrency = 4
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[mysqld_safe]
nice = -10
open_files_limit = 8192

[mysqldump]
quick
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[myisamchk]
key_buffer = 384M
sort_buffer = 384M
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httpd.conf

KeepAlive: Off
MaxKeepAliveRequests: 100
KeepAliveTimeout: 1
MinSpareServers: 10
MaxSpareServers: 15
StartServers: 10
MaxClients: 150
MaxRequestsPerChild: 1000

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and why is atmail phoning home?

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I explained that less than a month ago, this software reflected that these ports should closed were reflected accurately as closed by scanning the ports.

Partial results:

Code:
Address Scanned: xx.xx.xx.xx

Scan Started at 10/27/2007 2:08:00 PM
Scan Finished at 10/27/2007 2:18:03 PM

Ports Scanned: 1 To 4000

Total Ports Found Open: 3794

Current Ports Found Open:
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Port: 00005
Port: 00009
Port: 00026
Port: 00044
Port: 00076
Port: 00083
Port: 00088
...
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