Hi, I recently replaced an older Linux Postfix server with a new OpenBSD (6.6) and OpenSMTPD 6.6.0.
Most things are working fine, but email sent to my secondary MX server never get accepted by my OpenSMTPD server -- they always get a 421 error that looks like this: smtp failed-command command="DATA" result="421 try again later" The secondary MX server is running OpenBSD/postfix and reports message statuses like this: (host foo.bar.com[192.168.2.2] said: 421 try again later (in reply to end of DATA command)) Does anyone have some suggestions on what I should be looking for/at to diagnose/fix this problem? Thanks, Jeff --