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  1. #1
    Registered User
    Join Date
    Jun 2007
    Posts
    4

    Default Smtp error

    hello all
    i have two big problem on my cpanel
    1 ) when send email via horde or SquirrelMail show error messege.

    error messege :

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

    2) when send and recive pop3 email sho error message :

    could not retive mail.yourdomain.com

    please help me

  2. #2
    Registered User
    Join Date
    Dec 2008
    Posts
    1

    Smile Hello

    This problem usually occurs when CSF ( Config Server Firewall ) is installed on your server and it is interacting with the working of squirrel mail. So while configuring CSF enable both SMTP_BLOCK & SMTP_ALLOWLOCAL . Enabling just SMTP_BLOCK can cause this issue.

    $ vi /etc/csf/csf.conf
    set
    SMTP_BLOCK = '0'
    save and exit
    restart csf.
    This will fix.

  3. #3
    Member
    Join Date
    Oct 2003
    Location
    Romania
    Posts
    25

    Default

    Instead of setting SMTP_BLOCK="0", I set SMTP_ALLOWLOCAL="1".

    Is this safe?

    Regards!

  4. #4
    cPanel Quality Assurance Analyst cPanelDon's Avatar
    Join Date
    Nov 2008
    Location
    Houston, Texas, U.S.A.
    Posts
    2,554
    cPanel/Enkompass Access Level

    DataCenter Provider

    Lightbulb SMTP Error while using CSF and the CSF options SMTP_BLOCK and SMTP_ALLOWLOCAL

    Quote Originally Posted by AndyB78 View Post
    Instead of setting SMTP_BLOCK="0", I set SMTP_ALLOWLOCAL="1".

    Is this safe?
    When the option "SMTP_BLOCK" is enabled it is then required to enable the option "SMTP_ALLOWLOCAL" to allow the cPanel hosted Webmail programs to send e-mail; this includes Horde, SquirrelMail, and RoundCube, when accessed via cPanel Webmail. If the option "SMTP_ALLOWLOCAL" is disabled but the option "SMTP_BLOCK" is enabled then it will break the ability for the aforementioned cPanel hosted Webmail programs to send e-mail.

    Please note that, due to the similar nature in how they function, the CSF option "SMTP_BLOCK" conflicts with the SMTP Tweak feature in the Security Center of WHM; additionally, only one of the two features should be enabled at any given time, and they both should not be active simultaneously.

    As CSF is a third-party product I recommend referring to the vendor web site for official support and clarification on usage of specific options:
    http://www.configserver.com/
    http://www.configserver.com/cp/csf.html
    http://forum.configserver.com/
    http://www.configserver.com/contact.html
    http://www.configserver.com/support.html
    Last edited by cPanelDon; 11-21-2009 at 12:10 AM. Reason: Clarification

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