SOLVED Allow SMTP on port 25 without security

Operating System & Version
CentOS Linux release 7.9.2009
cPanel & WHM Version
v11.92.0.11

mlopez

Well-Known Member
Dec 17, 2020
54
7
8
Maldonado - Uruguay
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Root Administrator
Twitter
Hey,

We use (against my recommendation) an archaic :rolleyes: software that uses port 25 with no security for SMTP connections, when sending email notifications.
Apparently our cPanel server doesn't accept this kind of unsecure connections, how can I enable it?

Thank you
 

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cPRex

Jurassic Moderator
Staff member
Oct 19, 2014
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Hey there! There isn't a way to set up cPanel to do this as having an option to make it easy for a user to disable SMTP authentication would cause several issues. While it might be possible, you'd need to customize Exim manually to do this, so you may want to explore the Exim users list pages for more details on that configuration, if it exists.
 

mlopez

Well-Known Member
Dec 17, 2020
54
7
8
Maldonado - Uruguay
cPanel Access Level
Root Administrator
Twitter
Hey cPrex,

Maybe I didn't explain correctly. What I want is to allow a user to configure the mail client to use SMTP with authentication but neither using SSL/TLS nor STARTTLS.
Like the Thunderbird screenshot attached.

Thank you!
 

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cPRex

Jurassic Moderator
Staff member
Oct 19, 2014
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Thanks for the additional details - that does make more sense.

I'm not sure there's a good way to limit that to just one IP address, but can you check this thread to see if that is what you're looking for?

 
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