Still watching logs, this one just passed by. Probably unrelated to the changes in 20130517, but I was curious about it:
May 19 13:24:20 harrier postfix/postscreen[3533]: CONNECT from [188.42.15.19]:48706 to [207.223.116.211]:25 May 19 13:24:26 harrier postfix/postscreen[3533]: NOQUEUE: reject: RCPT from [188.42.15.19]:48706: 450 4.3.2 Service currently unavailable; from=<bou...@consumer-news123.com>, to=<mun...@example.net>, proto=ESMTP, helo=<mail18.consumer-news123.com> May 19 13:24:26 harrier postfix/postscreen[3533]: PASS NEW [188.42.15.19]:48706 May 19 13:24:26 harrier postfix/postscreen[3533]: DISCONNECT [188.42.15.19]:48706 All is well and good for a non-whitelisted host, but apparently it was too quick in coming back to the secondary MX IP address ... May 19 13:24:26 harrier postfix/postscreen[3533]: CONNECT from [188.42.15.9]:33610 to [207.223.116.214]:25 May 19 13:24:26 harrier postfix/postscreen[3533]: WHITELIST VETO [188.42.15.9]:33610 ... all in the same second, but according to syslog, sequentially after having earned whitelist status. May 19 13:24:32 harrier postfix/postscreen[3533]: NOQUEUE: reject: RCPT from [188.42.15.9]:33610: 450 4.3.2 Service currently unavailable; from=<bou...@consumer-news123.com>, to=<mun...@example.net>, proto=ESMTP, helo=<mail8.consumer-news123.com> May 19 13:24:32 harrier postfix/postscreen[3533]: DISCONNECT [188.42.15.9]:33610 Another six seconds pass before this one is turned away, which suggests that the greet pause was repeated. Makes sense, because "WHITELIST VETO" means it was not seen before. -- http://rob0.nodns4.us/ -- system administration and consulting Offlist GMX mail is seen only if "/dev/rob0" is in the Subject: