I noticed that I obviously lost a ML subscription (lx-office-devel), cause I got a 'Post by non-member to a members-only list' ...
So I decided to 'resubscribe' but I didn't got a mail to verify my subscription.
After checking the logs of the receiving SMTP I found following:
Aug 11 12:10:47 chaos postfix/smtpd[10995]: warning: hostname sourceforge.net does not resolve to address 216.34.181.89
Aug 11 12:10:47 chaos postfix/smtpd[10995]: connect from unknown[216.34.181.89]
Aug 11 12:10:47 chaos postfix/smtpd[10995]: Anonymous TLS connection established from unknown[216.34.181.89]: TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)
Aug 11 12:10:48 chaos postfix/smtpd[10995]: NOQUEUE: reject: RCPT from unknown[216.34.181.89]: 550 5.7.1 Client host rejected: cannot find your hostname, [216.34.181.89]; from=<noreply@sourceforge.net> to=<chris@computersalat.de> proto=ESMTP helo=<smtp.ch3.sourceforge.com>
Aug 11 12:10:48 chaos postfix/smtpd[10995]: disconnect from unknown[216.34.181.89]
so please check and fix all of your configured MTA for correct DNS settings.
Thank you :)
