On Wed, Oct 26, 2016 at 02:13:37PM +0200, Julian Kippels wrote: > Oct 15 23:16:21 balder postfix/smtp[12174]: 5FDBC8002F90: host > ppmx1.its.rochester.edu[128.151.57.241] refused to talk to me: 554 > ppmx1.its.rochester.edu ESMTP Blocked - see > https://support.proofpoint.com/dnsbl-lookup.cgi?ip=134.99.128.242
You're blocked in their firewall. This is not a legitimate place for SMTP rejection, so Postfix doesn't see it as one. -- http://rob0.nodns4.us/ Offlist GMX mail is seen only if "/dev/rob0" is in the Subject: