Derrick Ryalls wrote:
This is perhaps off topic, but all machines in question are running
FreeBSD :)
This problem is related to the configuration of your MTA, not FreeBSD.
Every day I get dozens of failed email notifications in the form of:
UNDELIVERABLE MAIL Your message to the following recipients cannot be
delivered: <[EMAIL PROTECTED]>: webmail.hansenet.de
[213.191.73.2]:
RCPT TO:<[EMAIL PROTECTED]>
<<< 550 RCPT TO:<[EMAIL PROTECTED]> User unknown
[...]
With secondary mail servers, I am accepting mail for other domains,
and then forwarding them on. It is my belief that acting as a
secondary mail server is what is causing me to receive all these
errors.
[...]
Assuming that my guessing is correct, is there any way to stop this
flood of reject emails short of not being a secondary server for
anyone?
Which MTA? In Postfix, you can use the relay_recipient_maps parameter
to query a list of valid recipients. The MX for which you're acting as
secondary should be able to provide the list.
--
Sahil Tandon <[EMAIL PROTECTED]>
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