From: Len Conrad (no email)
Date: Tue Oct 01 2002 - 06:41:38 EDT
>I have a user who is configured with a XXX.2 as a firewall and XXX.3 as a
>MX record for his email server. Last night, the error was that there was
>no reverse lookup available for his address.
show the postfix log line for that error
>There was no Answer for "dig -x XXX.2" which was his reported email address.
"user at x dot x dot x dot 2" isn't a very effective email address
>His real mail server (and smtp box) is XXX.3
>
>This morning I can get a reverse lookup, but XXX.2 doesn't have an MX
>record. It isn't supposed to is it?
domain names can have MX records, ip addresses usually don't. the latter
"would" be
>But does postfix do a MX based lookup,
postfix use the "MX algorithm" for determining where to send mail for a
domain.
>or just any old lookup?
that wouldn't be a very effective lookup. "any" is a valid query op code,
I don't know if "old" is.
Len
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