Issue Mailserver Delivery confirmation Not working proberly

[superfun2k23]

Server operating system version

Debian 12.12

Plesk version and microupdate number

18.0.73 #3

Hi,

I have a problem, that sometimes occur with sending mail delivery confirmations failing.

The mailserver try to send the delivery confirmation to the client, but this falls:

"<client@pleskmailer>: host 127.0.0.1[127.0.0.1] said: 550 5.7.1 id=30096-07 -
Rejected by next-hop MTA on relaying, from MTA(smtp:[127.0.0.1]:10025): 550
5.7.1 Command rejected (in reply to end of DATA command)"

I use postfix and dovecat in combination with immunify+.

Whats a bit crazy, sometimes it work and sometimes not

 

[Sebahat.hadzhi]

Hello, @superfun2k23 . Could you please try the resolution from the following article:

• https://support.plesk.com/hc/en-us/...5-Email-delivery-fails-5-7-1-Command-rejected