Hi all, just trying to get my head around sender verify. The following
log entry
2004-05-19 00:01:14 F=<Elviragbp@???> RCPT
<d.gillingwater@???>: Bad HELO: ggyxnij (unqualified-helo)
Is the Elviragbp@??? connecting to our server and asking to send
mail to <d.gillingwater@???> and we accept that though we log the
unqualified domain in the helo, then
2004-05-19 00:01:14 H=12-218-115-74.client.mchsi.com (ggyxnij)
[12.218.115.74] sender verify fail for <Elviragbp@???>: all
relevant MX records point to non-existent hosts or (invalidly) to IP
addresses
This is checking that z45rcv.com is valid (which it isn't as a dig
lookup gives
;; ANSWER SECTION:
z45rcv.com. 1152 IN MX 10 218.106.116.147.
and I assume from the log entry that this should be a hostname not an ip
address. So it does not matter whether mchsi.com is valid or not just
the senders domain.
Why did the header change from HELO: ggyxnij in the first log entry to
H=12-218-115-74.client.mchsi.com (ggyxnij), why is this helo bad?
2004-05-19 00:01:14 H=12-218-115-74.client.mchsi.com (ggyxnij)
[12.218.115.74] F=<Elviragbp@???> rejected RCPT
<d.gillingwater@???>: Sender verify failed
Then we reject the message. Is this correct, I just want to be sure I
have understood it properly.
Ron
--
Ron McKeating
Senior IT Services Specialist
Internet Services and Software Solutions
Loughborough University
01509 222329
