Courier Mail Server has many interesting features. One of the features is support for backscatter blacklist. It helps to protect the server from receiving emails […] Read More
Tag: Courier
E-mail clients like Thunderbird or Outlook stopped to communicate with Courier IMAP/SMTP/POP TLS after some upgrade. The only clue in log file was this error […] Read More
After upgrade of Linux distribution Courier stopped to accept emails delivered over TLS or SSL. There was just nice error message in the log file: […] Read More