Exim and Dovecot SASL
Exim v4.64+ users can use Dovecot SASL instead of Cyrus SASL for authenticating SMTP clients.
conf.d/10-master.conf
service auth { ... #SASL unix_listener auth-client { mode = 0660 user = mail } ... }
conf.d/10-auth.conf
auth_mechanisms = plain login
exim.conf
Create authenticators for Dovecot:
dovecot_login: driver = dovecot public_name = LOGIN server_socket = /var/run/dovecot/auth-client # setting server_set_id might break several headers in mails sent by authenticated smtp. So be careful. server_set_id = $auth1 dovecot_plain: driver = dovecot public_name = PLAIN server_socket = /var/run/dovecot/auth-client server_set_id = $auth1
If you are having problems with this not working ensure that you are using version 4.72 or greater of exim. Previous versions of exim have trouble with the version of the protocol used in Dovecot 2