[cobalt-users] RaQ3 Mail Delivery Problem

[Chae <chae@xxxxxxxxxxxx>]

Hi Yah,

I've got a customer who has several accounts with us and up till now he's 
never had problems with email.

He's told me that he can't receive any email from a specific domain and 
he's using these people for his up and coming marketing campaign.

The customer has a catch-all address set up on his account which then 
forwards email to his ISP account. We've tested the catch-all and it works 
okay the problem only exists with this domain. We have also had email from 
the emailfactory.com sent to his ISP account and they arrive okay...so that 
rules his ISP dropping the mail.

From our logs this afternoon:-
Sep 23 15:46:27 ns sendmail[10396]: PAA10396: 
from=<C4842456083.989.2@xxxxxxxxxxxxxxxxxxxxxxxx>, size=2030, class=0, 
pri=32030, nrcpts=1, msgid=<200209230349.XAA05355@xxxxxxxxxxxxxxxxxxxxxxx>, 
proto=ESMTP, relay=hector.emailfactory.com [66.28.35.5]
Sep 23 15:13:49 ns sendmail[7858]: PAA07858: 
from=<C4236850283.989.2@xxxxxxxxxxxxxxxxxxxxxxxx>, size=2028, class=0, 
pri=32028, nrcpts=1, msgid=<200209230316.XAA17567@xxxxxxxxxxxxxxxxxxxxxxx>, 
proto=ESMTP, relay=hector.emailfactory.com [66.28.35.5]
Sep 23 14:37:05 ns sendmail[5218]: OAA05218: 
from=<C1203379283.989.2@xxxxxxxxxxxxxxxxxxxxxxxx>, size=2016, class=0, 
pri=32016, nrcpts=1, msgid=<200209230240.WAA29647@xxxxxxxxxxxxxxxxxxxxxxx>, 
proto=ESMTP, relay=hector.emailfactory.com [66.28.35.5]
Sep 23 13:46:02 ns sendmail[1794]: NAA01794: 
from=<C6320209883.989.2@xxxxxxxxxxxxxxxxxxxxxxxx>, size=1866, class=0, 
pri=31866, nrcpts=1, msgid=<200209230149.VAA22159@xxxxxxxxxxxxxxxxxxxxxxx>, 
proto=ESMTP, relay=hector.emailfactory.com [66.28.35.5]
Sep 23 13:46:03 ns sendmail[1809]: NAA01809: 
from=<C6320209883.989.2@xxxxxxxxxxxxxxxxxxxxxxxx>, size=1145, class=0, 
pri=31145, nrcpts=1, msgid=<200209230149.VAA22170@xxxxxxxxxxxxxxxxxxxxxxx>, 
proto=ESMTP, relay=hector.emailfactory.com [66.28.35.5]

Now I've flushed the firewall, checked IPChains in case they've been added 
at some point for spamming or whatever, I've also checked the host.deny and 
the sendmail Spam Control (access) settings for any trace of the IP address 
above or the domain name...but nothing. I've also created a test account in 
the customers domain and had them send an email to that POP3 account. 
Nothing arrived, the DNS records for the customers account has the following...

a record domainname.co.nz
reverse on the IP
a record www.domainname.co.nz
a record mail.domainname.co.nz
mx record domainname.co.nz --> mail.domainname.co.nz
mx record www.domainname.co.nz --> mail.domainname.co.nz

I've checked the usual Blacklists etctera to see if Spamassassin was 
dropping it before sending but nothing shows up...server has spamassassin 
running.

Anyone any ideas - I've contacted the emailfactory.com to see if they have 
had any returned email or bounced mail so I can see the headers

Many thanks in advance

Chae