Authsenders

authsenders
Authenticated  sender.  For each sender included in authsenders: sender:relay:port|user|password qmail-remote will try SMTP Authentication of type CRAM-MD5, LOGIN, or PLAIN with
the provided user name user and password password (the authentication information) and eventually relay the mail through relay on port port.  The use of relay and port follows
the same rules as for smtproutes Note: In case sender is empty, qmail-remote will try to deliver each outgoing mail SMTP authenticated. If the authentication information is
missing, the mail is delivered none-authenticated.  authsenders can be constructed as follows:

              @example.com|generic|passwd
              .subdomain.example.com|other|otherpw
              mail@example.com|test|testpass
              info@example.com:smtp.example.com:26|other|otherpw
              :mailrelay.example.com:587|e=mc2|testpass