Steven W. Orr wrote:
I recently removed the following line from my sendmail.mc
define(`LUSER_RELAY', `local:steveo')
That line was causing all mail that was coming in to a non-existant
address to go to steveo.
Now I'd like to do exactly the opposite:
I want to reject all incoming mail that is coming from a nonexistant
account. For example, I have no user called fido. I want to reject
(from in sendmail) any mail that says
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED],net
Any way to do that?
Steven,
Ok, I am by no means a sendmail expert. In fact, I haven't played with
it in a long time. But, I did some googling and found the following
excerpt:
Sendmail Validation
The check_compat ruleset compares
all senders and receiver pairs before
mail is delivered. It validates the mail based on the results of
the comparison. It checks to see if host A can legally send a message
to host B. check_compat is called for
all mail deliveries, not just SMTP transactions.
It is used in the following situations:
A set of users who are restricted
from sending mail messages to external domains need to send mail
messages to internal; domains. Both the sender and recipient addresses
are checked to ensure that they are in the local domain.
A particular user needs to ensure that he
or she
does not receive mail messages from a specific source.
A particular host needs to ensure that
external
senders do not use that host as a a mail relay. The mail messages
are screened based on the sender's hostname.
The link to the page is: http://docs.hp.com/en/B2355-90685/ch04s09.html
The first bullet point, which checks the validity of user accounts
against the local domain sounds like what you are looking for.
Regards,
Jeff
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