Hello, This is my first post to this list. This is partly to report that I have OAuth2 working with office 365 smtp servers, but mainly to ask for help in diagnosing a TLS error which I think is probably unrelated.
I would have posted to one of the existing threads, but the archive "reply" button does not work, and I do not know how to join a thread only active before I subscribed to the list. I am using a somewhat adapted exim.conf.template using debian testing. While testing, I have encountered two apparently benign error messages: 1) H=outlook.xx.office365.com [xx.xx.xxx.xxx] TLS error on connection (recv): Error in the pull function. That was after a succesful delivery using XOAUTH2 to the ms SMTP server. At first I thought that it might be some quirk of the MS XOAUTH implementation. But the I discovered somewhat similar report during a delivery to an "ordinary", smarthost: 2) H=mail.xx.xxinternet.com [xxx.xxx.xx.x] TLS error on connection (recv): The TLS connection was non-properly terminated. I am using the debian light binary, and have gathered some debugging information using the -dall+tls+auth+transport+timestamp option. A trimmed and redacted version is attached (as a gzipped text file): I hope this list allows attachments.. That report of an otherwise successful OAUTH2 delivery to the office365 server shows that the error is coming from gnutls_record_recv: "14:53:07 tls_read: err from gnutls_record_recv" It appears to be harmless, but I am no expert on TLS, so I am seeking any help or comments. I plan to upload my script (shell + gawk) to Gitlab, but want to sort out this error first, although, as I say, I suspect that it is unrelated. ael
part_tls_debug_redacted.txt.gz
Description: application/gzip
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