RE: [cobalt-users] Maybe Not a Raq ??

["Jerry Farquhar" <jerry@xxxxxxxxxxx>]

Dan,

Thanks for the input..

The email recipients are a small number of Asian domains and so far anyone
that trys to send to those domains off of this or any other Raq we have has
their message disappear in the big CLOUD we call the Internet.

FYI - They are using the SMTP on the RAQ as is typical for all the sites we
host.  For this particular customer the Co-Lo provider/ISP is both this
customers Internet connection to the Internet from their office as well as
provides their DNS.

My initial thoughts were that the emails were being wrongfully filtered
somewhere after leaving the Raq and since I have no real means of making
reasonable contact with the tech people for these locations over seas
actually inquired with the ISP doing the Co-Lo for us and they assured me
that they are not doing any kind of filtering or blocking on their part.

The Co-Lo ISP had hinted that we might want to check somewhere to see if the
senders domain (and our other hosted domains) was some how blacklisted
incorrectly as a know Spammer.  I can't believe any of our hosted sites
would intentionally listed as Spammers as we keep pretty close tabs on who
is allowed to host with us (typically very conservative organizations).

My Latest Question:
===================
What is the best way of checking for some kind of Black Listing for a
domain???


Thanks again for all your helpful insight and troubleshooting assistance.

Jerry
Net Wise Solutions





-----Original Message-----
From: cobalt-users-admin@xxxxxxxxxxxxxxx
[mailto:cobalt-users-admin@xxxxxxxxxxxxxxx]On Behalf Of Dan Kriwitsky
Sent: Thursday, December 12, 2002 8:07 AM
To: cobalt-users@xxxxxxxxxxxxxxx
Subject: RE: [cobalt-users] Maybe Not a Raq ??


> I have a customer that is hosted on one of our Raq4r's and is
> having trouble getting email to contacts in Asia (Taiwan,
> Hong Kong, Tokyo).

If he's not having problems anywhere else, I would suspect that it has
nothing to do with the RaQ. If they're using your SMTP, check with the
company hosting your RaQ to be sure they're not blocking some Asian IPs
as many are doing because of the blatant criminal spam gangs being
hosted in TW and CN.

Craig's test is a good idea. If they're using your SMTP you can also run
tail -f /var/log/maillog and see the mail being delivered and accepted
and/or rejected by whatever the next hop in the food/email chain is.
It's possible it's your customer's ISP interfering somehow.

e.g., like this example going to AOL:

Dec 12 07:49:38 admin sendmail[13383]: gBCDnc413383:
from=<me@xxxxxxxxxx>, size=1882, class=0, nrcpts=1,
msgid=<016c01c2a1e5$bad9e4e0$bb7ba8c0@BUSINESS>, proto=ESMTP,
daemon=MTA, relay=pcp856052pcs.palmrn01.fl.comcast.net [68.56.150.219]

Dec 12 07:49:39 admin sendmail[13385]: gBCDnc413383:
to=<someone@xxxxxxx>, ctladdr=<me@xxxxxxxxxx> (214/100), delay=00:00:01,
xdelay=00:00:01, mailer=esmtp, pri=31882, relay=mailin-02.mx.aol.com.
[64.12.138.89], dsn=2.0.0, stat=Sent (OK)

I see it leaving my home and then I see it being accepted by AOL.
--
C2002 Dan Kriwitsky

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