Authentication failed in mail service

[entoutcas]

Yeah this happens from time to time, this is a very sensitive issue with people on this forum so I’m not going to write too much, you can try it

Solution to "authentication failed" error in Rainloop

Hi all if you face errors with logging in to Rainloop and if your logs have something as “Invalid password in passdb: crypt() failed: Invalid argument” Then there is a simple fix for this. You need to update your Dovecot to 2.3.x as bcrypt is supported by 2.3.x. The steps are as follows: Add the reposity key of dovecot to the rpm key store: sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 18A348AEED409DA1 Add the official dovecot Ubuntu Repo to sources.list (this example …

Last time I mentioned about using the official dovecot repo, people went absolutely crazy here.