Question How To Setup Outgoing Only Mail

[X3Web]

Server operating system version

Ubuntu 20.04.6 LTS

Hi,

We have a client using MS Exchange for their email, but they want a separate "scans" email that only sends messages through my server. When I enable the mail service for this domain, it works, but if they try to send emails to the same domain, it fails because the system tries to deliver locally.

If I disable incoming mail to avoid this, the "scans" email can’t authenticate and throws the following error:

"Oct 24 11:05:57 hosting plesk_saslauthd[2172378]: failed mail authentication attempt for user '[email protected]' (password len=10)"

Can anyone help me fix this? It seems like the server isn’t allowing SMTP for authentication, or maybe I’m missing something.

 

[scsa20]

You might want to remove your license key since that isn't your plesk version. Also make sure you are on the latest version of Plesk since the latest version has the option for the domain's email settings of "Disabled for incoming mail" which allows you to use as sending but not getting emails and should work as expected.