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!

EXIM on just 587 or 443; not 25?

Discussion in 'E-mail Discussion' started by Phylum, Jan 11, 2018.

  1. Phylum

    Phylum Active Member

    Joined:
    Apr 20, 2010
    Messages:
    33
    Likes Received:
    0
    Trophy Points:
    56
    The Ask
    Is it possible to force EXIM to use encryption by default and ignore non-encrypted connections? Said differently: If I leave just port 465 or ports 465 and 587 in the config, will that break anything?


    Backstory
    I just migrated from AWS to Azure and learned that Microsoft has technical restrictions in place that block email sent directly from Azure VMs to external email providers. While it's possible to make a request to remove the restriction, it requires submitting a technical justification and potentially undergoing some anti-fraud verification and even then it's solely at their discretion.

    Instead, Microsoft recommends that Azure customers employ authenticated SMTP relay services to send email to those external email providers, and they're pushing things like Exchange Online Protection & SendGrid.

    Call me dense, but it's not clear to me what the true issue is and I'm pursuing that separately:
    • Is it just that Microsoft doesn't like people sending unencrypted and so sending encrypted would resolve?, OR
    • Is it just that Microsoft doesn't want people sending mail period, encrypted or not?
    My hope is that it's the former versus the latter which is why I'm here.

    Links to resources below.
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  2. Phylum

    Phylum Active Member

    Joined:
    Apr 20, 2010
    Messages:
    33
    Likes Received:
    0
    Trophy Points:
    56
  3. cPanelMichael

    cPanelMichael Technical Support Community Manager
    Staff Member

    Joined:
    Apr 11, 2011
    Messages:
    44,749
    Likes Received:
    1,885
    Trophy Points:
    363
    cPanel Access Level:
    Root Administrator
    Twitter:
    Hello,

    This topic is discussed on the following thread:

    PCI fails on "SMTP Service Cleartext Login Permitted"

    Let us know if this helps.

    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