smtp relay problem with just one host after update to 11.4

[mfwiniberg]

Hi,

I have a scalix server running in our network at 192.168.1.140. I have a large number of hosts throughout that network that use it to relay outgoing mail, and they are all working except one, and I just cannot think how to find out why that particular one fails. Our domains and internal network (192.168.1.0) all have RELAY ACCEPT entries in the smtpd.cfg file, which was correctly updated during the install of the 11.4 update (from 11.3)

Since the update I have added the particular hosts name and IP address to the RELAY ACCEPT entries, but to no effect.

Any attempt to send mail from just this one host gets a "550 denied due to spam list". I have logged in to the mailserver with telnet from the failing host and got this message, but from another host it works OK.

Any pointers as to where to look next greatly appreciated as the host that is unable to send is our on-line reservation system and it's the outgoing confirmation emails that are being refused. It was all working OK before installing 11.4!

[LeslieW]

Is it possible the offending host is not identifying itself as you think it should be?

Try logging into the offending host and do this, but substitute host names and user names from your own sytems:

$ telnet sxlab.mydomain.net 25
Trying 192.168.0.121...
Connected to sxlab.mydomain.net.
Escape character is '^]'.
220 sxlab.mydomain.net ESMTP Scalix SMTP Relay 11.4.2.12068; Fri, 30 Jan 2009 12:57:54 -0500 (EST)
ehlo puddles
250-sxlab.mydomain.net Hello puddles.mydomain.net [192.168.0.2], pleased to meet you
250-AUTH PLAIN DIGEST-MD5 LOGIN GSSAPI CRAM-MD5
250-AUTH=LOGIN
250-DSN
250 8BITMIME
mail from: <lesliew@puddles.mydomain.net>
250 lesliew@puddles.mydomain.net... Sender ok
rcpt to: <root@sxlab.mydomain.net>
550 Denied due to spam list

Then hop onto your Scalix server and see what the SMTP Relay is reporting.
# omshowlog -l 7 -p 5 -s smtpd

REPORT SMTP Relay (SMTPD Relay Pr) 01.30.09 12:58:15
[OM.DMON 2172] SMTP: Rejected relay attempt from lesliew@puddles.mydomain.net at 192.168.0.2 to root@sxlab.mydomain.net

See if the sending host name and IP are what you have in your smtpd.cfg file.