Plesk 12.x / Linux :: Timeout On Courier-pop3d

Jul 14, 2015

I have a problem with an account. The client connects and starts getting his mails, like this:

Jul 14 07:39:04 host courier-pop3d: LOGIN, user=*****@*****.com, ip=[::ffff:*.*.*.152], port=[*]Click to expand...

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Courier Imap Pop3d Fail To Deliver Message On First Attempt

Oct 5, 2007

Courier-imap pop3d fail to deliver message to a POP client on first attempt. On the second attempt its able to download the messages and no problems. Not sure what could be causing that problem. Are there any tools that are used with courier-imap mailboxes for fixing corrupted mailboxes?

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Plesk 12.x / Linux :: Courier Mail Service Do Not Respond

Feb 2, 2015

I'm using plesk with CentOS 6.6

After setting up some e-mail accounts over the plesk gui I tried to connect via a mail software (like thunderbird).

This failed with every combination of settings I tried. So I checked if the POP3/IMAP services are running correctly using telnet.

I connected using the following command:

telnet <host-ip> 110

The response was:

Trying <host-IP>...
Connected to <host-IP>.
Escape character is '^]'.
-ERR Cannot connect to POP server <host-IP> (<host-IP>:110), NB connect error 1460
Connection closed by foreign host.

Did I miss to enable a setting?

The Plesk gui schows me, that the corresponding services are running...

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Plesk 12.x / Linux :: Courier SSL Shared Cipher Error

Aug 8, 2014

Yesterday we upgraded two of our servers to the latest Plesk 12.

The 1st server is an CentOS/CLoudlinux 6.x server and the 2nd an CentOS 5.x server.

Both of them were running Plesk 11.5 before the upgrade.

After the upgrade, we have the same issue in both servers which is that the START/TLS, SSL protocols at Courier imaps or pop3s do not work, and mail clients (outlook, thunderbird) return that the password is wrong when they connect over a secure connection.

In both of them, at the /var/log/maillog, we are getting the same messages, as the following one:

courier-imaps: couriertls: connect: error:1408A0C1:SSL routines:SSL3_GET_CLIENT_HELLO:no shared cipher

As the issue is in both server, we believe thath it there is a bug in the new version or the update script.

We have already checked all configurations which seem ok, tried to... reboot the machines, mailchk repair, but nothing seems to work. 

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Plesk 12.x / Linux :: Unable To Disable SSL V2 And V3 In Postfix And Courier

Dec 13, 2014

I am trying to secure my VPS and one thing noted in a recent scan was SSL v2 and v3 being supported for SMTP, POP3 and IMAP. So a check of ‘Disabling SSLv3 Support on Servers’ and the Postfix configuration settings suggest:

smtpd_tls_mandatory_exclude_ciphers = aNULL, MD5
# Preferred syntax with Postfix = 2.5:
smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3​

This actually goes further than disabling SSLv2 and v3 and also excludes the use of NULL and MD5 ciphers.

The Postfix conf file, exists in two places on my VPS:

# find / -name

Examining both only the copy in /etc/postfix/ is configured and at the end of this file I can find all the Plesk settings, including some RBLs I’ve defined via the UI. Hence I know this is the working config as of the two, it’s the only one actually configured. Hence I add the required commands to the config:

smtpd_tls_key_file = $smtpd_tls_cert_file
smtpd_tls_security_level = may
smtpd_use_tls = yes
smtp_tls_security_level = may

[Code] ....

I then go to the Plesk Tools & Settings > Services Management and restart:

SMTP Server (Postfix)
And for good measure:

Plesk milter (Postfix)

I then test whether SSLv2 is enabled:

# openssl s_client -connect x.x.x.x:25 -starttls smtp -ssl2​

Now what I should get back is an error as the attempt to connect with SSLv2 should fail as it's an excluded protocol, but instead what I get back is the Plesk cert and a connection:

# openssl s_client -connect x.x.x.x:25 -starttls smtp -ssl2
depth=0 C = US, ST = Virginia, L = Herndon, O = Parallels, OU = Parallels Panel, CN = Parallels Panel, emailAddress =
verify error:num=18:self signed certificate

Why? What do I need to do to have Postfix use the updated config and refuse an SSL2 connection?

I seem to have the same issue with Courier having made similar changes to the /etc/courier-imap/pop3d-ssl file:

# Iain 2014-12-12

And /etc/courier-imap/imapd-ssl file:

# Iain 2014-12-12

actually, this should probably read:

# Iain 2014-12-12

Why am I unable to disable SSL v2 and v3 for SMTP/POP3/IMAP with Postfix and Courier?

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Plesk 12.x / Linux :: Courier IMAP And Auto Deleting Trash After 7 Days

Feb 20, 2015

I'm trying to find Courier IMAP config: /etc/courier/imapd

Because i would like to edit the parameters for the trash folder (see qoute and link below)

The file on my server is not there. I did some grep and locate commands and was unable to find it.

# The following setting is optional, and causes messages from the given
# folder to be automatically deleted after the given number of days.
# IMAP_EMPTYTRASH is a comma-separated list of folder:days. The default
# setting, below, purges 7 day old messages from the Trash folder.
# Another useful setting would be:
# IMAP_EMPTYTRASH=Trash:7,Sent:30

[Code] ....

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Plesk 12.x / Linux :: API Subscription Response Timeout

Apr 9, 2015

I'm using the API to dynamically create new subscriptions. However, I frequently never receive a response back for my request.

I have enabled graceful restart, which has made an improvement, but my requests still fail to return a response every now and then.

This is problematic, because the script needs to know whether the subscription has been successfully created or not. Often times, when the script times out, the subscription was successfully created. But Once and and a while that's not true, and it is causing inconsistencies in my system.

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Plesk 12.x / Linux :: Timeout When Try To Download A Backup

Jun 29, 2015

Can't download a full plesk backup.

When i'm trying to download a backup from parallels plesk to local it takes like 3 minutes then timeout.

SO CentOS 6.6 (Final)
Plesk 12.0.18
Backup size: 1.82 GB

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Plesk 11.x / Linux :: Sending Via SMTP Causes Timeout?

Jul 14, 2013

I am using Plesk Panel 11.0.9 (latest updates applied) on CentOS 6.4. at Strato. Unfortunately I can not send email from outside of the server (thunderbird). As I am not familiar wwith mail server configuration at all I would expect that plesk panel does that for me (right?)

* I can send emails via web mail.
* I can receive emails in thunderbird, but sending runs into a timeout.
* The plesk firewall configuration does have a rule for smtp (but I don't see for which port), so I would expect it is not a firewall issue
* I would like to send with some security (starttls and encrypted password), but sending does currently also not work with any combination of (non-)security setting.

My domain has been migrated from another provider, I added it myself via Plesk panel later. The only mail-related change I did without plesk panel was to copy the mailboxes from my old server to /var/qmail/mailnames. But this should not effect sending email...

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Plesk 12.x / Linux :: Migration And Transfer Manager - Connection Timeout

Jul 8, 2015

When I start the process in Migration & Transfer Manager i have this error: Error: Connection timeout. I see in the log file:

[2015-07-08 19:39:55.977|22820] INFO: Launchpad started : /usr/local/psa/admin/bin/launchpad --send-scout --host=... ... .... --port=22 --login=root --session-path=/usr/local/psa/PMM/msessions....
[2015-07-08 19:39:56.021|22820] DEBG: Connecting to ....:22
[2015-07-08 19:39:56.021|22820] DEBG: Resolving ..... .....
[2015-07-08 19:42:03.344|22820] ERR : Unable to open socket to ......:22: Connection timed out

[2015-07-08 19:42:03.398|22820] INFO: ConnectionTimedOut[....]: Timeout while attempting connection to host ........ [./../commons/socket.h:65]
plesk::Socket::Socket(const string&, short unsigned int)
[2015-07-08 19:42:03.399|22820] INFO: Launchpad finished. Exit code: 12

In two servers the configuration is identical: CENTOS 7 and PLESK 12

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Plesk 12.x / Linux :: Server Went Offline Now / None Of Websites Will Load / They Timeout

Jul 26, 2015

I am running Plesk Version: 12.0.18 on CentOS.Earlier today my service provider had a massive issue and my server was down for several hours. Upon it being back online i've restarted but now I cannot load any of my pages. I have 10 domains setup and if I ping their name servers or the server IP i get packets received now.

One of my installed domains is [URL] ... now if you try and load this url you get a time out but if you try to access admin page URL....None of the subscriptions are able to load their websites when i type in their URL and well it worked before it went down.

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Plesk 12.x / Linux :: Page Not Found / Timeout / 502 Bad Gateway Error Creating Accounts

Jun 22, 2015

As I read, when Plesk and WHMCS are in the same server, you may have 502 bad gateway errors when creating an account through WHMCS..Page not Found/Timeout/502 Bad Gateway error creating accounts with Plesk 10+..By default Plesk 10 and above performs a forced restart of apache when an account is created or suspended which causes WHMCS to lose connection to the server, and if your WHMCS is on the same server, you will also lose connection to WHMCS at the same time.

In order to resolve this please refer to the following knowledgebase article for instructions on configuring Plesk to perform a graceful restart instead: URL..

But when I activate nginx in Plesk the 502 bad Gateway problem comes back.Is there an option to activate Nginx graceful restart in Plesk?

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Plesk 11.x / Linux :: Searching Large Mailbox In Horde / Roundcube Causes Read Data Timeout

Jun 26, 2014

This is applies to both Horde and roundcube webmail client software;

Using Plesk 11.5.30 with Horde 5.1.5 or roundcube 0.9.5 on CentOS Linux release 6.5 (Final).

We have seen this behavior occur on multiple servers.

Clients experienced slow to no response after executing a search, which eventually results in a failed to communicate with the server-error in the webmail client.

The Apache server log shows script time-out errors when searching larger mailboxes (i.e. larger than 950 MB), this does not happen on smaller mailboxes.

We have seen errors like the following in the Apache server error log with Horde (personal data like IP-address and domain name are x'ed out):

[Thu Jun 19 14:55:06 2014] [warn] [client] mod_fcgid: read data timeout in 45 seconds, referer:
[Thu Jun 19 14:55:06 2014] [error] [client] Premature end of script headers: ajax.php, referer:

And with Roundcube:

[Tue Jun 17 13:02:04 2014] [warn] [client] mod_fcgid: read data timeout in 45 seconds, referer:,flash=1,tif=0
[Tue Jun 17 13:02:04 2014] [error] [client] Premature end of script headers: index.php, referer:,flash=1,tif=0

Steps to reproduce:

- use a large mailbox (950 MB or higher)
- login to the webmail (Horde or roundcube)
- do a search in the search field on the top right
- the time-out error should appear in the server Apache error log (after at least 45 seconds)

This seems like an inefficiency or bug in the search query that searches the user's mailbox. Is there any other way we can prevent this issue and the error messages?

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Sendmail + Vm-pop3d

Aug 1, 2007

Has anyone successfully configured sendmail to work with vm-pop3d under FReeBSD?

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Vm-pop3d Presistent Connection

Jan 9, 2008

Hello, I have a problem with the vm-pop3d service I have set the option (--daemon=30) to 30 and the time out to 900 in /etc/init.d/vm-pop3d but still is not enough, many connections to the pop3 server are dropped is like the connections remains active (persistent) because when I try to restart the server I get a failed error on shutting down and still get the timeout error with outlook, I need to kill all the vm-pop3d process a then restart it in order to work but 10 or 15 minutes later I get the timeout error again, so I don't know why is failing continuously and why don't shutdown properly when restarting the service.

[root@server ~]# service vm-pop3d restart
Shutting down vm-pop3d: [FAILED]
Starting vm-pop3d: [ OK ]

[root@server ~]# ps -fea | grep vm-pop3d
root 25297 1 0 16:14 ? 00:00:00 vm-pop3d --daemon=30 -t 900
root 25317 25297 0 16:14 ? 00:00:00 vm-pop3d --daemon=30 -t 900
root 25434 25297 0 16:14 ? 00:00:00 vm-pop3d --daemon=30 -t 900 ....

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Pop3d Authentication Erros

Apr 3, 2007

my mail server stops authenticating users. When they try to check messages they get the login screen in their mail clients again and again. I have to go to the server and restart saslauth, mysqld and postfix.

I'm getting the following warning when restarting MySQL:

070403 13:53:09 mysqld started
070403 13:53:09 [Warning] Changed limits: max_open_files: 1024 max_connections: 1014 table_cache: 64
070403 13:53:10 InnoDB: Started; log sequence number 0 43654
/usr/libexec/mysqld: ready for connections.

The file my.cnf show the following:

# Default to using old password format for compatibility with mysql 3.x
# clients (those using the mysqlclient10 compatibility package).



Also, my maillogs is showing these errors:

Apr 3 13:24:47 mail1 pop3d: authentication error: Input/output error
Apr 3 13:30:25 mail1 pop3d: authentication error: Input/output error
Apr 3 13:30:28 mail1 pop3d: authentication error: Input/output error
Apr 3 13:30:29 mail1 pop3d: authentication error: Input/output error

Do I have to increase connections on my.cnf? I think 2548 is enough for the amount of user I have which is less than 100 users.

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Plesk 11.x / Windows :: SSL Certificate - Server Timeout

Mar 13, 2013

Windows Web Server 2008 SP2 + Plesk 11.0 x86

I've created an self-signing SSL-Certificate an set it up to my server-ip. Then, I got kicked from the server and now, on every site hosted on the server, even the Plesk Panel(https://xxxxxx:8443 is not reacheable. Server-Timeout.

One of the pages is this one: [URL] ....

Created self-signing Certificate, only filled in my full Name, Country and Domain.
Got kicked from the server, and now I have no possibility to access my server.

Got File Access with a recovery system, but this isn't really working.

A working Plesk Panel would be nice.

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Plesk Automation :: Daily Maintenance Task - Timeout

Jul 3, 2014

Since 3 Days the "daily maintenance script" isn't working anymore.

Task info

[table="width: 500, align: left"]
[td]Task ID[/td]
[td]Task name[/td]
[td]Run the daily maintenance script[/td]


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The Timeout SpeciMod_sec: The Timeout Specified Has Expired [severity "EMERGENCY"]

Aug 6, 2007

at my logs, i can see this timeout error caused my mod_security at my rhes 4 server.

mod_security-message: Access denied with code 403. Error reading request body, error code 70007: The timeout specified has expired [severity "EMERGENCY"]

I didnt specify any mod sec rule about "timeout", what timeout is this about?

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Plesk 11.x / Windows :: FTP Backup Failed - CURL Timeout Error

May 28, 2014

I'm having this issue when trying to set automatic backups to a separate server:

Cannot export dump file 'Friday_02_05_14_info_1405020913.xml' to 'ftp://Scott@'
[Transport error: unable to send directory to repository: Transport error: unable to put local file D:PleskPrivateTemp/ to Curl error: Timeout was reached]Click to expand...

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Dovecot Or Courier

Jul 7, 2009

I need to determine which mail server is better so i can know what to install as default on future servers.

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Courier Or Dovecot

Apr 25, 2009

i have cpanel with 512 meg ram.

i need fast mail server. so which of them is good?

Courier or Dovecot

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Courier Imap Too Slow

Dec 19, 2007

I have a mail account hosted in a VPS with cpanel and SquirrelMail as webmail client.

It has thousands of mail files. SquirrelMail got very slow, because courier-imap is very slow sorting files and authenticating users.

I've heard that Dovecot is much faster than courier...

Does anyone have replaced courier by dovecot in cPanel installations? is it a good idea?

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Mysql & Courier Imap Restarting Every 10 Mins?

Oct 6, 2008

yesterday i setup my first vps system and now its hosting 2 forums of my. Thing is in evry 10 mints Mysql & courier-imap are restarting..? I know this from the lxadmin alert email. So is it normal or is it a problem in my configuration..? Im running cent os 5 now. And i also check the log.. there is entry like below in it..

Oct 6 13:43:07 vps_10013 pure-ftpd: (?@ [INFO] Logout.
Oct 6 13:43:07 vps_10013 xinetd[8020]: EXIT: ftp status=255 pid=21638 duration=0(sec)
Oct 6 13:43:13 vps_10013 xinetd[8020]: EXIT: smtp status=1 pid=21637 duration=6(sec)
Oct 6 13:43:48 vps_10013 xinetd[8020]: START: smtp pid=21679 from=
Oct 6 13:43:49 vps_10013 xinetd[8020]: EXIT: smtp status=1 pid=21679 duration=1(sec)
Oct 6 13:44:48 vps_10013 xinetd[8020]: START: smtp pid=21901 from=
Oct 6 13:44:49 vps_10013 xinetd[8020]: EXIT: smtp status=1 pid=21901 duration=1(sec)
Oct 6 13:45:49 vps_10013 xinetd[8020]: START: smtp pid=22163 from=
Oct 6 13:45:50 vps_10013 xinetd[8020]: EXIT: smtp status=1 pid=22163 duration=1(sec)
Oct 6 13:46:49 vps_10013 xinetd[8020]: START: smtp pid=22499 from=
Oct 6 13:46:50 vps_10013 xinetd[8020]: EXIT: smtp status=1 pid=22499 duration=1(sec)
Oct 6 13:47:49 vps_10013 xinetd[8020]: START: smtp pid=23668 from=
Oct 6 13:47:50 vps_10013 xinetd[8020]: EXIT: smtp status=1 pid=23668 duration=1(sec)
Oct 6 13:48:49 vps_10013 xinetd[8020]: START: smtp pid=23920 from=
Oct 6 13:48:52 vps_10013 xinetd[8020]: EXIT: smtp status=1 pid=23920 duration=3(sec)
Oct 6 13:49:49 vps_10013 xinetd[8020]: START: smtp pid=24173 from=
Oct 6 13:49:53 vps_10013 xinetd[8020]: EXIT: smtp status=1 pid=24173 duration=4(sec)
Oct 6 13:50:49 vps_10013 xinetd[8020]: START: smtp pid=26117 from=
Oct 6 13:50:53 vps_10013 xinetd[8020]: EXIT: smtp status=1 pid=26117 duration=4(sec)

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Right Values For Courier Configuration On CPanel Server ?

Jan 22, 2008

Any live expirience for good values of this courier settings for cPanel server:

Maximum Imap Connections (Total)
Maximum Imap Connections Per Ip
Maximum TLS/SSL Imap Connections Per Ip

Maximum Pop3 Connections (Total)
Maximum Pop3 Connections Per Ip
Maximum TLS/SSL Pop3 Connections Per Ip

Number of Authentication Daemons


The current values are the original ones which cPanel set:

Maximum Imap Connections (Total) 50
Maximum Imap Connections Per Ip 30
Maximum TLS/SSL Imap Connections Per Ip 30

Maximum Pop3 Connections (Total) 50
Maximum Pop3 Connections Per Ip 4
Maximum TLS/SSL Pop3 Connections Per Ip 30

Number of Authentication Daemons 5


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Create Additional Subfolder Postfix/courier

Sep 24, 2008

I have a mail server which is courier, postfix, amavisd, using Mysql db and virtual mailboxes which I administer through postfixadmin.

I want to be able to add a set of default folders to all mailboxes created such as Possible Spam and some others.

I have investigated shared folders but this is not what i want, is there a way I can get courier/postfix to create a set of additional sub-folders when it creates a mailbox.

All mailboxes are accessed as IMAP mailboxes.

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Postfix+MySQL+Courier-IMAP+Spamassassin+SquirrelMail ...issue

Feb 11, 2007

Hopefully I'm posting this in the correct area. Our server runs CentOS 4.4 on x86_64 arch.

So basically everything was going rather smoothly...

Problems began to arise at the point where I finished installing/configuring SquirrelMail. Upon logging in, I saw this:

[see attachment]

Ok, so I checked maillog and saw:

Feb 11 13:50:46 zeus imapd: LOGIN, user=alex, ip=[::ffff:], protocol=IMAP
Feb 11 13:50:47 zeus imapd: Failed to connect to socket /tmp/fam--
Feb 11 13:50:47 zeus imapd: Failed to create cache file: maildirwatch (alex)
Feb 11 13:50:47 zeus imapd: Error: Input/output error
Feb 11 13:50:47 zeus imapd: Check for proper operation and configuration
Feb 11 13:50:47 zeus imapd: of the File Access Monitor daemon (famd).
Feb 11 13:50:47 zeus imapd: DISCONNECTED, user=alex, ip=[::ffff:], headers=0, body=0, rcvd=21, sent=57, time=1

So I did some searching and determined it was a problem with Courier-IMAP being compiled with File Alteration Monitor support and famd not running (I built RPM directly from source tarball without any customization whatsoever per the instructions on the Courier website).

I found some possible solutions to be:

1) Install and run fam and be sure portmapper is running as well (problem being is that fam has since been replaced by gamin on CentOS, which is installed properly on my system).
2) Do a source install of Courier-IMAP and --disable-fam

Ok, so route 1 went like this: I uninstalled gamin, found fam-2.6.8, installed it, started it manually, made sure portmapper was running and tried again. This time, I still got the same errors in SquirrelMail, but the errors in maillog didn't show up. However, shortly after the page loaded, the famd process I had started manually promptly ended without my intervention. Ok, onto trying #2.

Route 2 went like this: reinstalled gamin, then I tried building a custom RPM by manually configuring with --disable-fam and then using rpmbuild -bc --short-circuit and rpmbuild -bi --short-circuit. That didn't change anything at all, I still had the same errors both with SquirrelMail and in maillog. Then I said ok, I'll just do a complete source install. ./configure --disable-fam && make && make install. Manually started that server, tried again, same deal, both errors.

So I've got problems. Either with Courier-IMAP, SquirrelMail, or both. The other daemons seem to run fine, I just mentioned them in case of the possibility of some kind of (unknown to me) conflict.

If you need to see any of my configs, let me know...any information greatly appreciated...I'm desperate.

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How To Permanently Disable Http/ftp/mysql/courier With LXADMIN/KLAXO

Jun 30, 2009

I have a small VPS that is used only to send mail. It uses the HyperVM software, so I installed "Klaxo" (LXadmin) on it and set up the domain, etc..

I then went into the "Server : Linux --> Services" page and disabled everything except qmail. (I also set them so they are not auto-started at bootup.)

The problem is that after about 10 minutes or so... all the services are automatically restarted.

I have no idea what process is doing this, and it's driving me a little nutty.

Does anyone know how to permanently disable a service using the Klaxo/lxadmin control panel?

(Or at least, where I can find whatever monitoring system is checking if they are up, and then restarting them?)

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Vps Timeout

Aug 14, 2008

I got my VPS a few days ago and want to get started.

I installed Webmin (with the rpm - centos 5), and it says it installed successfully and then I can login.

I typed in my domain name with the ':10000' but I get a network timeout in Firefox.

I know my DNS is right, because I have the domain name pointed to my IP address with an A record.

SSH is working fine, I can login using the domain name and not my IP address.

I tried installing Lighttpd, but still get the timeout. Replacing the domain name with the VPS IP address doesn't work either.

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