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!

Prevent Mail Dispatch from Non-Existing Domains ?

Discussion in 'E-mail Discussion' started by Tcalp, Aug 12, 2015.

  1. Tcalp

    Tcalp Active Member

    Joined:
    Mar 16, 2013
    Messages:
    25
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Ottawa, ON, Canada
    cPanel Access Level:
    DataCenter Provider
    Hey Guys,

    Does anyone know of an exim filter (or other solution) that I can add to check the from address of e-mail being dispatched and black-holing / rejecting mail sending from domains that don't exist on the server ?
     
  2. cPanelMichael

    cPanelMichael Technical Support Community Manager
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    45,423
    Likes Received:
    1,960
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    Twitter:
    Hello :)

    You could try enforcing SPF checking by enabling the following option under "ACL Options" via "WHM >> Service Configuration >> Exim Configuration Manager":

    "Reject SPF failures"

    This will reject mail at SMTP time if the sender fails SPF checks.

    Thank you.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  3. Tcalp

    Tcalp Active Member

    Joined:
    Mar 16, 2013
    Messages:
    25
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Ottawa, ON, Canada
    cPanel Access Level:
    DataCenter Provider
    Doesn't that also affect in-bound messages ?
     
  4. cPanelMichael

    cPanelMichael Technical Support Community Manager
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    45,423
    Likes Received:
    1,960
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    Twitter:
    Yes, it will. You may find the following document helpful you are looking more-so to prevent SPAM from leaving your server:

    Prevent Email Abuse

    Thank you.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  5. tmssyed

    tmssyed Registered

    Joined:
    Apr 16, 2015
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Saudia Arabia
    cPanel Access Level:
    Root Administrator
    does this solution applies on non-existing email accounts.

    I mean there is a valid domain but spammers creates fake account via script on the website, will this be applicable on existing email accounts as well ?
     
  6. cPanelMichael

    cPanelMichael Technical Support Community Manager
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    45,423
    Likes Received:
    1,960
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    Twitter:
    Could you verify which solution from the URL in my last response you are referring to?

    Thank you.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
Loading...

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice