Linux Servers cPanel webhosting blog » E-mails issue

Send an E-mail from server.

Gunjan — Sun, 20 Nov 2011 10:56:23 +0000

Basically to send an E-mail from the Linux server shell, the mailx module is required. First install the mailx module by usiung the yum installed.

root@server[~]# yum install mailx

Once mailx installed on the server, you cna use the following syntax to send an E-mail from the server.

root@server[~]#mail -vv E-mail address

It will ask you for the subject

root@server[~]#mail -vv support@gmail.com
Subject: test message

Now press control+d, it will give you Cc: option. You can ignore it and press the control+d

It will send an E-mail and show you the following logs.

root@server[~]# mail -vv support@gmail.com
Subject: test mesgsage
Cc: supp0rt24x7@gmail… Connecting to [127.0.0.1] via relay…
220 support.localhost.com ESMTP Sendmail 8.13.8/8.13.8; Sat, 19 Nov 2011 23:47:32 -0500
>>> EHLO linux7802.localhost.com
250-server.localhost.com Hello localhost.localdomain [127.0.0.1], pleased to meet you
250-ENHANCEDSTATUSCODES
250-PIPELINING
250-8BITMIME
250-SIZE
250-DSN
250-ETRN
250-DELIVERBY
250 HELP
>>> MAIL From: SIZE=50
250 2.1.0 … Sender ok
>>> RCPT To:
>>> DATA
250 2.1.5 … Recipient ok
354 Enter mail, end with “.” on a line by itself
>>> .
250 2.0.0 pAK4lWqU025615 Message accepted for delivery
support@gmail… Sent (pAK4lWqU025615 Message accepted for delivery)
Closing connection to [127.0.0.1]
>>> QUIT
221 2.0.0 server.localhost.com closing connection

As per above logs E-mail sent to the E-mail address support@gmail.com successfully

Simple imap connection script.

Gunjan — Sat, 29 Jan 2011 13:34:51 +0000

We can test IMAP service by using following simple script.

$mbox = imap_open(“{mail.loacalhost:143/novalidate-cert}INBOX”, “test@test123.com”, “1q2w3e”);
print_r(imap_errors());
?>

If you want to force SSL connection only then remove novalidate-cert from above script.

Critical: exim security update

Gunjan — Sat, 11 Dec 2010 23:46:34 +0000

To resolve exim vulnerability issue exim upgraded to latest version but its throwing following error message aftre restarting exim service.

root@server [/tmp]# /etc/init.d/exim restart
Shutting down exim:                                        [ OK ]
Shutting down spamd:                                       [FAILED]
Starting exim:                                             [ OK ]
Starting exim alt spool: exim: -D is not available in this Exim binary [FAILED]
To resolve above error simply run following command from shell.

root@server [/tmp]#/usr/mscpanel/msswitch.pl inout

Horde Failed to connect to localhost:25 error message

Gunjan — Fri, 06 Aug 2010 06:02:26 +0000

On Shared server as well as on Dedicated server some time we are facing large connection issue to SMTP port 25 at that time mostly we disable SMTP port 25 and enable any other port for SMTP but after changing SMTP port mostly we receive following error message in Horde webmail.

There was an error sending your message: Failed to connect to localhost:25 [SMTP: Invalid response code received from server (code: 421, response: Too many concurrent SMTP connections; please try again later.)]

To resolve above error simply change SMTP port from 25 to new SMTP port in following file.

root@server [/usr/local/cpanel/base/horde/imp/config]# Pico servers.php

And change following line

From

‘smtpport’ => 25,

‘smtpport’ => 26,

We have taken new port as 26 for example you can use any port as per your requirement.

Similar problem with “Squirrelmail” then refer following steps.

root@server [/usr/local/cpanel/base/3rdparty/squirrelmail/config]#pico config_default.php

Change following line

From

$smtpPort = 25;

$smtpPort = 26;

Save file and exit and now open the webmail.

SERVICE CURRENTLY NOT AVAILABLE Error No. [0x01F4] – RoundCube

Gunjan — Sat, 19 Jun 2010 10:48:45 +0000

Mostly we received following error aftre browsing RoundCube

SERVICE CURRENTLY NOT AVAILABLE Error No. [0x01F4] – RoundCube

As well as RoundCube error logs showing following logs

[06-Oct-2008 08:34:56 -0400] DB Error: _doQuery: [Error message: Could not execute statement]
[Last executed query: PREPARE MDB2_STATEMENT_mysql_8c77e0752a8db2da365c3c7a19fe8842c84663aa7 FROM 'INSERT INTO messages\n (user_id, del, cache_key, created, idx, uid, subject, `from`, `to`, cc, date, size, headers, structure)\n VALUES (?, 0, ?, now(), ?, ?, ?, ?, ?, ?, FROM_UNIXTIME(), ?, ?, ?)']
[Native code: 1064]
[Native message: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), ?, ?, ?)' at line 3]
in /usr/local/cpanel/base/3rdparty/roundcube/program/include/rcube_mdb2.inc on line 265
[06-Oct-2008 08:35:20 -0400] DB Error: _doQuery: [Error message: Could not execute statement]
[Last executed query: PREPARE MDB2_STATEMENT_mysql_d6ee872839dbf41a18e11e2f09d1f4d9790e462d7 FROM 'INSERT INTO messages\n (user_id, del, cache_key, created, idx, uid, subject, `from`, `to`, cc, date, size, headers, structure)\n VALUES (?, 0, ?, now(), ?, ?, ?, ?, ?, ?, FROM_UNIXTIME(), ?, ?, ?)']
[Native code: 1064]
[Native message: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '), ?, ?, ?)' at line 3]
in /usr/local/cpanel/base/3rdparty/roundcube/program/include/rcube_mdb2.inc on line 265

The error is occur becasue Mysql could not insert the values from UNIXTIME. To avoid this error simply open file

/usr/local/cpanel/base/3rdparty/roundcube/program/include/rcube_mdb2.php and replace following code

From

return “FROM_UNIXTIME($timestamp)”;

To

return sprintf(“FROM_UNIXTIME(%d)”, $timestamp);

Now clear cache from your local machine refresh RoundCube error page.

How to set E-mail size in exim?

Gunjan — Tue, 09 Mar 2010 11:26:42 +0000

You can set the E-mail size limit from your WHM.

First login into WHM
Second select “Exim Configuration Editor” present unde ” Service Configuration” section.
Third scroll down and click on “Advanced Editor” optoin.

You will see the empty box (remember select first empty box) where you can type (right underneath where you see #!!# cPanel Exim 4 Config), enter in the following:

message_size_limit = 100M

Fourth scroll down to the bottom of that screen and click “Save” option.

Exim configuration will be rebuilt with the new option and your Exim will be restarted.

Horde session issue?

Gunjan — Wed, 27 Jan 2010 14:33:39 +0000

There is a very common issue where Horde prevents access to webmail by repeatedly redirecting viewers to Language Selection screen. The following commands, executed as root, will solve these issues:

root@server[~]#/usr/local/cpanel/bin/checkperlmodules
root@server[~]#/scripts/fullhordereset
root@server[~]#myisamchk -r /var/lib/mysql/horde/horde_sessionhandler.MYI

If still you have problem then check the ownership for session directory present in /var/cpanel/userhomes/cpanelhorde directory.

root@server[~]#ll /var/cpanel/userhomes/cpanelhorde

drwx–x–x 4 cpanelhorde cpanelhorde 4096 Jun 5 2009 ./
drwx–x–x 7 root root 4096 Dec 17 01:48 ../
drwxr-x— 2 cpanelhorde cpanelhorde 4096 Jun 5 2009 mail/
drwx—— 2 cpanelhorde cpanelhorde 4096 Jan 27 14:01 sessions/
Session directory should be cpanelhorde.cpanelhorde ownership recursively

How to disable local-mail delivery for one domain name?

Gunjan — Mon, 16 Nov 2009 00:04:11 +0000

You can disable local-mail delivery for one domain name from your shell and follow the instructions..

First go to file
root@admin[~]#vi /etc/localdomains
Then select the domain name give them comment# or remove it and save the file
:wq!

Second step go to file
root@admin[~]#vi /etc/remotedomains
and add the domain name we have comment or removed in the above file
:wq!

Basically when ever we use external mail server at that time we need to remove domains entry from /etc/localdomains file and add it in /etc/remotedomains file

Enable html display for horde?

Gunjan — Sat, 14 Nov 2009 00:21:54 +0000

You can enable the html display for horde by using following steps but please make sure that you have been logged in as root.

root@admin[~]# vi /usr/local/cpanel/base/horde/imp/config/mime_drivers.php

Search for the line
—-
/**
* HTML driver settings
*/
$mime_drivers['imp']['html']['inline'] = false;
—–

and replace it with

——–
/**
* HTML driver settings
*/
$mime_drivers['imp']['html']['inline'] = true;
——–
Save the changes and restart the following services.
root@admin[~]#service cpanel restart
root@admin[~]#/scripts/restartsrv_courier

Mails are not downloading in outlook?

Gunjan — Wed, 11 Nov 2009 02:08:12 +0000

Mails are not downloading in outlook but present on server in Inbox.In that case after looking into mail logs we are getting this error message:

“scancur opendir(“cur”): No such file or directory”

To resolve this issue follow the steps

service chkservd stop
service courier-authlib stop
service courier-imap stop

Open up /var/cpanel/cpanel.config and set maildir=0 ( if there’s no entry there, just add in )

Following, run the following command in sequence:

/scripts/eximup –force
service cpanel restart
service xinetd restart
service courier-authlib restart
service courier-imap restart
service chkservd start