On 2018-12-17 Jonas Smedegaard <d...@jones.dk> wrote:
> Quoting Andreas Metzler (2018-12-17 19:37:05)
[msmtp / GnuTLS 3.6 breaks]
>> FWIW I have had successful connections against exim4 (gnutls 3.5 and 
>> 3.6). Which host are you trying to connect to?

> Sorry for exaggerating!

Not at all.

> The hosts I experienced problems with are mail.jones.dk and 
> mail.homebase.dk - both running Postfix on Debian stable (which made me 
> rule out them as cause for blame, but...) both of them managed by myself 
> with various attempts at tightening security, so I realize now that I 
> may possibly have exposed bugs in unusual setups rather than common 
> ones.

It might be the other way round, GnuTLS servers the only ones not
triggering the issue.

> Both systems are running in production so I am not happy doing drastic 
> experiments on them - but on the other hand they are public accessible 
> so available for testing this bug if needed.

Thanks! FWIW as a temporary workaround you can invoke msmtp with
--tls-priorities=NORMAL:-VERS-TLS1.3

cu Andreas

-- 
`What a good friend you are to him, Dr. Maturin. His other friends are
so grateful to you.'
`I sew his ears on from time to time, sure'

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