Am 21.11.2012 14:45, schrieb kamleshverma:
> Every day i m seeing hundreds of mails in mailq, all they are having
> unknown domain name
how did they get in your server ?
show logs
try using
reject_unknown_sender_domain
Reject the request when Postfix is not final destination for the
sender address, and the MAIL FROM domain has 1) no DNS A or MX record,
or 2) a malformed MX record such as a record with a zero-length MX
hostname (Postfix version 2.3 and later).
The unknown_address_reject_code parameter specifies the numerical
response code for rejected requests (default: 450). The response is
always 450 in case of a temporary DNS error.
The unknown_address_tempfail_action parameter specifies the action
after a temporary DNS error (default: defer_if_permit)
anyway sometimes users make typos , but these typo domains have A
entries, therefor simply use an error transport etc
Best Regards
MfG Robert Schetterer
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