Postfix suddently stops logging on CentOS 7
Postfix keeps on working but suddenly stops logging. tail -f /var/log/maillog shows nothing. Eventually you discover that Postfix is now logging to the journal. To
The mail system [email protected] (expanded from [email protected]): can’t create user output file
When trying to send email to a Dovecot user, you get the following message: This is the mail system at host hostname.localdomain. I’m sorry to
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
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 does SPF and DKIM work?
SPF SPF records can be added easily by just adding a new TXT record to DNS. But how does the syntax for an SPF record
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
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: