STARTTLS test (was Re: No AUTH PLAIN with dovecot 2.0.19)
Steffen Kaiser
skdovecot at smail.inf.fh-brs.de
Tue Sep 30 06:24:38 UTC 2014
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On Mon, 29 Sep 2014, Reindl Harald wrote:
>Am 29.09.2014 um 15:21 schrieb Michael Wechner:
>
>> hence I would assume to see it also for the new version of postfix
>> and dovecot, or do I misunderstand something?
> if the server is configured in a way it offers AUTH only
> over a encrypted channel (recommended) then you need to
> use STARTTLS before you see the capability and for that
> telnet is just the wrong tool
To test STARTTLS try this:
a) gnutls-cli -p 587 --starttls smtp
STARTTLS
^D
The ^D lets gnutls perform the SSL handshake, then you can type again.
b) openssl s_client -connect smtp:587 -starttls smtp
- --
Steffen Kaiser
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