Dave Buchanan (Abo Ltd) wrote:
Dear postfix users
I have re-configured our postfix mailservers to remove catch all aliases to remove the ammount of mail accepted.
I know have one more issue to resolve with respect to non delivery
notifications - backscatter
the setup is as follows
[EMAIL PROTECTED] -> [EMAIL PROTECTED] (demon.net is an uk isp)
This is what happens to an e-mail that has spam / virus etc from
Mail is accepted by our servers for delivery and then passed on to [EMAIL
PROTECTED]
The demon.net mailserver rejects this mail with a 550 error
our mailserver then sends a non-delivery notification to the sender
If the sender has been dreamed up by the spammer etc then they receive unwanted mail
I would like to know how to turn these non-delivery e-mails off in postfix
Please do not hijack threads. compose a new message instead of replying
to an unrelated one. changing the subject is not enough.
if you must forward mail, then you need one of two things:
- get the final server to accept your mail (without tagging your server
as a spam source). this is hard to impossible.
- avoid forwarding spam as much as you can. you may be more aggressive
here ("hold" mail that "may be spam").
you can also implement rate limits and the like so that you don't become
a spam tunnel in case of a spam run targetting the forwarded users.
yes, As Joery said, forwarding has become harder than it was...
