[exim] Re: Strange messages related to TLS

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Autor: Jeremy Harris
Data:  
Para: exim-users
Asunto: [exim] Re: Strange messages related to TLS
On 13/03/2024 19:23, mhbeyle--- via Exim-users wrote:
> I have several servers configured with exim4


That name is the Debian binary for Exim. Nobody else calls it that.
Version 3 of Exim went obsolete TWENTY YEARS ago.


> - Sending to gmail: H=gmail-smtp-in.l.google.com [142.250.27.26] TLS error on connection (recv): The TLS connection was non-properly terminated.


Gmail cannot be bothered to properly close down a TLS session; they just drop the TCP
connection. The GnuTLS library reports this.

> - Sending to yahoo: no error


I assume you are not concerned by this.

> - Sending through an external relay: H=email-smtp.eu-north-1.amazonaws.com [13.48.208.88] TLS error on connection (recv): A TLS fatal alert has been received: User canceled.


That one I have not seen ("User canceled").
You could get a packet capture and decode the actual TLS record this external
relay sent, possibly. Or you could enquire of the operators of that relay what they are doing.

>
> And so on with some others ...


If you do not give details, it is hard to comment.

> Are we sure that there is no problem with these errors?


You said "All messages are delivered correctly."
Do you have some other criterion for there being a problem?
--
Cheers,
Jeremy


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