Trying to get VERP working with Majordomo

I have had a Majordomo configuration working for years (with help from this list getting the aliases configured). Lately I have been receiving more and more bounce messages from Exchange servers that do not identify the intended recipient, so I am hoping to implement VERP, at least temporarily,

Question regarding smtpd DNS resolution

Hello, I had a question about Postfix’s smtpd DNS resolution. In my logs (generally from spam sources), I see the following: Feb 4 15:05:46 server postfix/smptd[718]: warning: hostname 1-2-3-4.dyn.isp.net does not resolve to address 1.2.3.4: Name or service not known Does this mean that: 1. s

Re: Question regarding smtpd DNS resolution

> On Feb 4, 2018, at 5:46 PM, J Doe wrote: > > Feb 4 15:05:46 server postfix/smptd[718]: warning: hostname > 1-2-3-4.dyn.isp.net does not resolve to address 1.2.3.4: Name or service not > known > > Does this mean that: > > 1. smtpd receives a connection from an smtp client and does a revers

Re: Trying to get VERP working with Majordomo

> On Feb 4, 2018, at 3:33 PM, Norton Allen wrote: > > abcd.lists.local: > abcd-test-abcd-mj-incoming: "|/usr/bin/sudo -u majordomo > /opt/majordomo/resend -C /etc/opt/majordomo/abcd-verp.cf -l abcd-test > abcd-test-abcd-mj-outgoing" > abcd-test-abcd-mj-outgoing: :include:/var/opt/majordomo/li