Please whitelist cPanel in your adblocker so that you’re able to see our version release promotions, thanks!

The Community Forums

Interact with an entire community of cPanel & WHM users!
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

SMTP data timeout on connection

Discussion in 'E-mail Discussions' started by Eric M, Sep 21, 2017.

  1. Eric M

    Eric M Member

    Joined:
    May 8, 2017
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Philippines
    cPanel Access Level:
    Root Administrator
    Hi,

    Has anyone experience smtp error such as email with specific attachment ( zip, jpg and pdf file are being not sent. However when the email being sent is plain text it is sent.

    Also is it normal to have many "SMTP data timeout (message abandoned) on connection from" in our exim log?

    Thank you!
     
  2. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    38,658
    Likes Received:
    1,427
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    Hello,

    Check /var/log/exim_mainlog to see if you notice any error entries related to the message. EX:

    Code:
    exigrep MSGID /var/log/exim_mainlog
    Repalce "MSGID" with the message ID of the affected message, as found when viewing the message header in an email client.

    This can sometimes relate to the following option under the "ACL Options" tab in "WHM >> Exim Configuration Manager >> Basic Editor":

    Introduce a delay into the SMTP transaction for unknown hosts and messages detected as spam.

    Per it's description:

    Thank you.
     
  3. Eric M

    Eric M Member

    Joined:
    May 8, 2017
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Philippines
    cPanel Access Level:
    Root Administrator
    Hi,

    As per checking the exim log i am only seeing

    2017-09-22 11:38:15 1dvEiH-0008VB-Hx SMTP data timeout (message abandoned) on connection from ([x.x.x.x]) [x.x.x.x]:59708 F=<user@domain.com>
    2017-09-22 11:41:07 1dvEl4-0001HF-4m SMTP data timeout (message abandoned) on connection from ([x.x.x.x]) [x.x.x.x]:59766 F=<user@domain.com>
    2017-09-22 11:44:08 1dvEnz-0002RO-Hj SMTP data timeout (message abandoned) on connection from ([x.x.x.x]) [x.x.x.x]:59856 F=<user@domain.com>
    2017-09-22 11:44:40 1dvEoV-0002dA-M2 SMTP data timeout (message abandoned) on connection from ([x.x.x.x]) [x.x.x.x]:59877 F=<user@domain.com>
    2017-09-22 11:45:33 1dvEpL-00034l-NO SMTP data timeout (message abandoned) on connection from ([x.x.x.x]) [x.x.x.x]:59900 F=<user@domain.com>
    2017-09-22 11:47:22 1dvEr6-0003nx-SJ SMTP data timeout (message abandoned) on connection from ([x.x.x.x]) [x.x.x.x]:59928 F=<user@domain.com>
    2017-09-22 11:48:14 1dvErw-00048f-QI SMTP data timeout (message abandoned) on connection from ([x.x.x.x]) [x.x.x.x]:59957 F=<user@domain.com>
     
  4. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    38,658
    Likes Received:
    1,427
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    Hello,

    Can you verify if the issue persists when temporarily disabling the following option under the "ACL Options" tab in "WHM >> Exim Configuration Manager >> Basic Editor"?

    Introduce a delay into the SMTP transaction for unknown hosts and messages detected as spam.

    Thank you.
     
  5. Eric M

    Eric M Member

    Joined:
    May 8, 2017
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Philippines
    cPanel Access Level:
    Root Administrator
    Hi,

    Thank you for the advice. However after we disabled it we still experience the Data connection time out.
     
  6. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    38,658
    Likes Received:
    1,427
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    Hello,

    Can you open a support ticket using the link in my signature so we can take a closer look?

    Thank you.
     
  7. Eric M

    Eric M Member

    Joined:
    May 8, 2017
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Philippines
    cPanel Access Level:
    Root Administrator
    we already created a ticket # 8887205 but have not receive a reply yet.
     
  8. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    38,658
    Likes Received:
    1,427
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
  9. Eric M

    Eric M Member

    Joined:
    May 8, 2017
    Messages:
    6
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Philippines
    cPanel Access Level:
    Root Administrator
    Hi,

    Thanks for the update. We have already applied the MTU but there are still experiencing the issue, The scenario is email with attachment are intermittent in being sent user can send attachment then after a few minutes they will not be able to send email with attachment again prompting the error smtp time out, however plain text emails are successfully being sent without errors.
     
  10. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    38,658
    Likes Received:
    1,427
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    Hello,

    I see you have sent a response to the support ticket. I'll continue to monitor the ticket and update this thread with the outcome once it's closed.

    Thank you.
     
Loading...

Share This Page