Hi,
sorry, about the CRLF in my first post.... it is just the other way round, smtp
servers should (but rarely do) reject LF-only new-lines.
but the problem to identify certain smtp servers - or at least exim - persists.
to my amazement nessus cannot identify an (my) smtp server anymore
(which otherwise runs fine). It reports an unknown service on port 25.
I watched the smtp's log (exim) and had repeatedly lines in it starting
with:
SMTP protocol violation: synchronization error (next input sent too
soon): rejected "HELO example.com" H=[...]
same lines with "EHLO there" "GET / ..." a.s.o. as if (my interpretation
without checking any code) find_services is faulty in that it sends too
many lines without waiting for replies or sending CRLF as NL instead of
LF only, which is in breach with RFCs and therefor rejected by
"well-behaved" smtps. sendmail and most other smtps swallows these lines
afaik.
hope this helps finding a bug
Mit freundlichen Grüßen / regards
Hartmut Steffin
_______________________________________________
Nessus mailing list
[email protected]
http://mail.nessus.org/mailman/listinfo/nessus
