How to count / determine the exact amount of messages in a Postfix mail queue
How do I count the message in Postfix’s mail queue? I’m not really interested in all these posts on the internet that outputs the queue.
Why does it take exactly two minutes for my email to get delivered to Gmail’s server?
Quick answer: Greylisting. Long answer: Read this: https://forum.netcup.de/anwendung/sonstige-anwendungen/p82197-warum-ist-sendmail-so-langsam-php-mail/ or summarised: Greylisting: Greylisting refers to a form of spam control for emails, in which the first
How to view the Dovecot logfile because the service is not starting
About Dovecot Service Not Starting At times the Dovecot service may stop for some or another reason. This article addresses the situation whereby the service
dovecot: pop3-login: Fatal: Dovecot version mismatch: Master is v2.3.2, pop3-login is v2.3.2.1 (if you don’t care, set version_ignore=yes)
Whilst running a Dovecot system, you might experience the following error in your log file: Jul 13 09:25:02 hostname dovecot: pop3-login: Fatal: Dovecot version mismatch:
SSL error: No path found from the leaf certificate to any root
Before you used Gmail to retrieve your email from a Virtualmin server. It suddenly stops working and you see this error in Gmail: SSL Security