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Home » GFI User Forums » Kerio Connect » Messages rejected "authentication" problems (Problem relaying messages received from other mails.)
Messages rejected "authentication" problems [message #150530] Sun, 14 November 2021 16:59 Go to next message
torbianchi is currently offline  torbianchi
Messages: 3
Registered: October 2021
Since we enabled the "anti-spoofing features, we begun to reject some messages received from other systems to one of our internal domains (we have more than one). We disabled the anti-spoofing but problem is still present. We have an SMTP server (kerio one) that only receives messages sent to one of our domains. We have a main domain "perfil.com" with an alias "perfil.com.ar". When We send mails from, for example, gmail, to one user to its main mailboxes, eg. xxxx@perfil.com the mail is received. When we send the same message to its alias mailbox xxxx@perfil.com.ar, it is rejected in the Kerio SMTP server resulting in "Relay attempt from ip address xxx.xxx.xxx.xxx ..... rejected". In the Gmail side we receive a 550 5.7.1 Relaying to <xxxx<_at_>perfil.com.ar> denied (authentication required. This problem begun when we tried to activate anti-spoofing and ot continues no matter we went back with this. We also noted that at the same time, in the Warning logs appeared:
- IM external process is not responding or is not running, trying to start it again...
- IM external process is not responding or is not running, closing all client sessions...
- XMPP server timeout .......
Those warnings are also new and we dont have IM nor XMPP enabled.
Re: Messages rejected "authentication" problems [message #150535 is a reply to message #150530] Mon, 15 November 2021 12:42 Go to previous message
freakinvibe is currently offline  freakinvibe
Messages: 588
Registered: April 2004
First of all, the IM and XMPP warnings are completely unrelated to your relaying problem. We have them as well, but does not cause any problems. So I would not loose any time on those.

Can you let me know which settings are enabled on:

Configuration > SMTP Server > Relay control > Allow relay only for

and

Configuration > Security > Sender Policy


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