Hi Wol, my credentials for dovecot have the following syntax, i.e. four additional colons after the password: '<user name>:<type of the password><password itself>::::' I use only virtual users, so I can't tell if mixing works, too.
For the dovecot setup I can recommend this guide: https://prefetch.eu/blog/2020/email-server/#mda-dovecot Two general remarks: 1st, be more patient. This is a mailing list, not a support chat. 2nd, I _strongly_ recommend to use some kind of hashing instead of plain passwords. I use '{ARGON2ID}' and generate the hashes by running 'doveadm pw -s ARGON2I' which asks for the plain text password on stdin. Kind regards, Nils