• Debian 11 is approaching its end-of-life (vendor EOL date - August 31, 2026). Plesk Obsidian 18.0.80 will be the last release to support it.
    If you are running Plesk Obsidian on Debian 11, we recommend you upgrade those servers to Debian 12 using our dist-upgrade tool.
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Mail problems

John Fleming

Basic Pleskian
Hi all,

I have a problem that has cropped up and I am not sure how to fix it.

I have a domain hosted in Plesk, and the client has setup their own mail server, and so I have configured the MX in Plesk to point to the new server and its working. However, when I try to send him mail I get the following error.

Remote host said: 553 sorry, that domain isn't in my list of allowed rcpthosts; no valid cert for gatewaying (#5.7.1)

To give you an idea on the infrastructure, this is how it is setup. (example IPs only)

Plesk Server 1.2.3.4
Mail server is also 1.2.3.4 -- I use this to send via Authenticated SMTP

Customers new mail server 5.6.7.8

When I try to send mail, my server (1.2.3.4) bounces back with that above error. I have also switched off mail services for that domain.

What am I missing??

Cheers
John
 
# is that domain listed in /var/qmail/control/rcpthosts ?
# did you try running mcheck to reset qmail settings?
 
Edit the file

Code:
vim /var/qmail/control/virtualdomains

In it delete the domain name that you don't host mail on that plesk server
 
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