Am 04.12.20 um 12:55 schrieb Andreas via Exim-users: > Hello List,
>
> we have a problem with this app. A customer loves M$. So he tries to
> connect to exim as outgoing connection. The IMAP part ist ok, there is
> dovecot.
>
> All error messages from the app are wrong, if you give wrong passwords
> it gave wrong certificate, correct data gives wrong password and so on...
>
> In the exim log you can see:
> 2020-12-04 11:36:21 SMTP protocol synchronization error (input sent
> without waiting for greeting): rejected connection from xxx I=[xxx]:25
> input="\026\003\001"
>
> I think it tries SSL/TLS and it doesn't matter what port you give in the it does .. when i need to guess : SSLv3 . This won't work von Port 25.
And it should not work ever again on any other port ;)
