K bharathan wrote:
i've been running this relay gateway for 2 yrs now; i'd no problems of
backscatters; have got a relay_recipient table and it take care of this;
also kept a check on multiple bounces from an empty envelope sender;
this particular scatter was for a customer domain and haven't kept
recipient table for that domain since the customer is having their own
mail server; in this situation where one has got limited control on
other mail server; my intention of post was to know what other
precautions can be taken on my gateway
Please don't top-post.
For customer domains, either require a valid recipient list,
or use reject_unverified_recipient to let postfix build a
recipient list for you.
Use a check_recipient_access table to limit
reject_unverified_recipient to only the domains you don't have
a list for. There was a discussion about this just a day or
two ago.
-- Noel Jones
