Hello,

I have a mail server running vm-pop3 and I am migrating it to Dovecot. I have a problem configuring Dovecot as a POP3 server only (I'm not interested in IMAP for now). I have two types of domains: one principal domain, whose users don't include the domain in the login process; and secondary domains, whose users include the domain part with the ! separator, instead of @ (i.e. prueba!mysecondarydomain.es). Because of that, I have set the following options in the configuration file:

auth_default_realm = myprincipaldomain.es auth_username_translation = !@

The combination of these two parameters produces the following effect when I login with an user of a secondary domain (I have no problem with principal domain authentication):

+OK Bienvenido al servidor de correo. user prueba!mysecondarydomain.es +OK pass prueba. -ERR Authentication failed. quit +OK Logging out

This is the resulting log:

Nov 19 09:58:51 prueba dovecot: auth(default): new auth connection: pid=21953 Nov 19 09:59:04 prueba dovecot: auth(default): client in: AUTH 1 PLAIN service=POP3 lip=192.168.1.84 rip=192.168.17.13 resp=AHBydWViYSF0b2JhcnJhLmVzAHBydWViYS4= Nov 19 09:59:04 prueba dovecot: auth(default): passwd-file(prueba@mysecondarydomain.es@myprincipaldomain.es,192.168.17. 13): no passwd file: /etc/virtual/mysecondarydomain.es@myprincipaldomain.es/passwd Nov 19 09:59:05 prueba dovecot: auth(default): client out: FAIL 1 user=prueba@mysecondarydomain.es@myprincipaldomain.es

So, I think the problem is Dovecot tests if the default domain is needed before the character translation is done, so the character ! is not detected as a domain separator, so the default domain is always appended.

The question is how I could resolve this problem. I need these two operations to be done because there is a lot of users already working with this configuration.

Thank you in advance.