Hi,
Probably mainly for Debian users.
libgnutls30 3.6.7-4 (Debian Buster)
exim4-daemon-heavy 4.89-2+deb9u5 (Debian Stretch)
Run these together and it tries to use TLS1.3 when sending email. And
google seems to close the connection straight away.
log entry:
2019-08-28 10:01:37 1i2tcD-000231-Uw H=alt3.gmail-smtp-in.l.google.com
[74.125.204.27]: Remote host closed connection in response to EHLO ....
Work around is to disable TLS1.3 - something like this to exim config:
tls_require_ciphers =
"NORMAL:!ARCFOUR-128:%LATEST_RECORD_VERSION:-VERS-SSL3.0:-VERS-TLS1.3"
I don't know why this is. But came around because I need to run the
older exim until I've solved another problem.
exim4-daemon-heavy 4.92-8+deb10u1 from Debian Buster works fine. TLS1.3
does work.
--
Tim Bray
Huddersfield, GB
[email protected]
+44 7966479015
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