smtpd_recipient_restrictions,postfix

[Deepak_5]

Hi,

Has anyone worked on postfix,
If yes,
How are these paramaters :
smtpd_recipient_restrictions,
smtpd_restriction_classes,
check_sender_access

Useful and used.
If someone can give an example, that would be great.

Thanks and Regards
Deepak

[Ralf Hildebrandt]

Yup, I'm using Postfix on HP for 2 1/2 years now.

smtpd_recipient_restrictions, smtpd_restriction_classes,
check_sender_access

are described on www.postfix.org

For an example of a working main.cf that uses the above for Spam Protection, have a look at my main.cf in the attachment!

http://www.stahl.bau.tu-bs.de/~hildeb/postfix/

[Deepak_5]

Hi Ralf,

A very good help. Thanks very much.
Could you please attach the file again, I could
open it.

One more question.
E-mail loop can be avoided by adding "Delivered-To:" line in mail header.
I read at the site, it can be taken
care by POSTFIX ?
This is one of my requirement.
What is e-mail loop, is it possible for
you to give a brief explaination why most
guy's need it.

Thanks and Regards
Deepak

[Ralf Hildebrandt · Accepted solution]

Have a look at my webpage in my first answer.

A mail-loop occurs if the machine that (according to the information in the DNS) SHOULD accept the mail doesn't accept it and re-sends the mail to itself (or another machine that sends it back and forth).

Basically, mail loops indicate missing knowledge of how DNS is to be set up.