Jeremiah Foster wrote:
I am having problems with an Outlook Express client connecting to
exim4. The logs are saying;
2005-08-26 13:56:16 SMTP protocol violation: synchronization error
(input sent without waiting for greeting): rejected connection from
H=[213.142.17.163] input="\026\003\001"
(When I got this message previously I switched Outlook Express to
Thunderbird and the issue went away. I assume that is because both
Thunderbird and exim implement the protocol more effectively than
Outlook Express. If I assume incorrectly I would welcome correction.)
The problem could be outlook's broken TLS implementation. Outlook is
probably trying to do TLS-on-connect on port 25. Configure Outlook for
SSL on port 465, and add the following to your exim config:
daemon_smtp_ports = 25 : 465
tls_on_connect_ports = 465
You may also want to add 587 to the port list, which is the standard
submission port -- note that it should _not_ be in the
tls_on_connect_ports list, only 465 belongs there.
- Marc
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