Mailcow on a VPS: self-host email Gmail accepts
Test outbound port 25 before installing mailcow: a block means mail never leaves the queue. Then set the DNS that stops Gmail's 550 5.7.25 PTR rejection.
#mailcow
Filtering by topic #mailcow · clear
Filtering by topic #mailcow · clear
Test outbound port 25 before installing mailcow: a block means mail never leaves the queue. Then set the DNS that stops Gmail's 550 5.7.25 PTR rejection.