|Building The Network You Need With PF, The OpenBSD Packet Filter: BSDCan 2016, Ottawa, Canada, June 8th 2016|
This used to be my best log:
Dec 11 23:57:24 delilah spamd: 18.104.22.168: connected (1/1), lists: spamhaus spews1 spews2 Dec 12 00:30:08 delilah spamd: 22.214.171.124: disconnected after 1964 seconds. lists: spamhaus spews1 spews2
A sender at wholesalebandwidth.com tried a total of 13 times from December 9th through 12th, giving up after one last attempt which lasted 32 minutes, 44 seconds without delivering a message.