Outgoing SMTP authentication

Hi, folks.

My last message has been misunderstood so I'll try it in other words.

Currently, I send my outgoing eMail to my ISP (Internet Service
Provider) with serialmail. Qmail drops all outgoing mail into one
Maildir and serialmail picks it up and delivers it via SMTP to my ISP.
Problem is, that my ISP is going to switch from plain SMTP to
authenticated SMTP. So my problem is not that other users want to send
/me/ mail by authenticated SMTP but I have to use authenticated SMTP
to post my eMail to my ISP. That's why I have to use serialmail with
authentication. Is there any way to do this?

Bye!

Matthias Jordan