I'm currently running qpsmtpd-async.
I host many domains and I'd like to protect them all
against backscatter using something like this:
http://psg.com/~brian/software/authbounce/configure-authbounce.txt
to add a bounce key to each outgoing message of the form:
X-bounce-key: $mx-$number;$sender;$timestamp;$key
This requires all mail sent by every user to go through
qpsmtpd + exim on my local machine.
This appears to require I setup another instance of qpsmtpd which
will allow people to connect to the port via SSL, then somehow
authenticate their connection once, then each time they send email
their outgoing email will enter qpsmtpd. If the message is to be
delivered locally, then it is. If the message is external, it will
be queued to exim for delivery immediately or next queue run.
So my questions are:
1) Can this be done using qpsmtpd-async or is it best to use
qpsmtpd-forkserver
2) I find many partial discussions about how to set this up,
can someone point me to a step-by-step which covers start
to finish how to get this working
3) Can someone point me to a specific discussion of debugging
this setup, maybe using swaks
Many thanks in advance.
- David
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