Halassy Zolt??n:
> Hello!
>
> We are maintaining a couple mail hosts (>100). It's fine, cause they
> generate low e-mail traffic. Now we got some new domains, and we belive
> the stress will be excessive, not just bots, but i fear hackers, ddos,
> etc (but the ham would be still low). To prevent risking the 100 other
> domains, we bought a new server, different hostname, different ip. I
> pulled up postfix on that one too, only for relaying those domains, with
> a simple caching recipient address verification. It works fine, except
> if someone tries to send to an address which doesn't exist, it will
> expose the real mail server's name in the error message which i don't
> want to.
>
> Is there a way to change the address verification failed message?
Yes.
Wietse
unverified_recipient_reject_reason (default: empty)
The Postfix SMTP server's reply when rejecting mail with reject_unveri-
fied_recipient. Do not include the numeric SMTP reply code or the
enhanced status code. By default, the response includes actual address
verification details.
Example:
unverified_recipient_reject_reason = Recipient address lookup failed
This feature is available in Postfix 2.6 and later.
> Well i tought i could list the valid users in a table too (instead of
> address verification), but since email creation happens with a webadmin
> tool directly to the (cyrus) IMAP server, and existence checked via lmtp
> + address verification, i would need to write a syncronization code,
> which i would like to avoid.
>
