On Fri, 30 Oct 2009, djjmj wrote:

John Hardin wrote:

Dana may not have that information - saying "which our ISP uses" suggests
SA is not under their control.

Correct SA is not under our control, just trying to find an answer to our
problem.

Dana:

Does your ISP bounce the messages back to you?

No we don't get the bounced message returned, no notification until receiving user expecting something calls complaining.

Okay. At least they aren't causing backscatter.

You really should be discussing this with your ISP's support desk or postmaster. There's little we can do without data that you're likely unable to provide. If your ISP has problems correcting the problem, then they can ask here for help and provide the technical details needed to troubleshoot the problem.

We have been discussing with them since Sept 17th with no fixes yet. Once they found out Windows Mail Client didn't have an issue they have been unwilling to help. "Not a server side problem, your clients are the problem"

Bummer. Will they even go look in the logs and see _why_ the messages are being discarded?

Something you could do is go to one of the various DNSBL websites and check whether your internet gateway's public IP address is listed. Your ISP may be doing something as simple as treating you as J. Random User From The Internet rather than as one of their customers.

I requested this information from the ISP last week. There response was "our or your" domain are not black listed. Maybe I'm misunderstanding your ?

Expanded format:

Your connection to the Internet has an IP address.

When your ISP receives email from you, it comes from that IP address.

They _should_ have their mail system configured to say "that IP address is our client, accept mail from it always".

They might not be doing that properly, in which case your IP address might then be compared to DNS blacklists, and if it appears on one, be rejected.

But without knowing _why_ the ISP is rejecting your mail, that's just a WAG.

Here's another question: are you using authenticated SMTP? There are certain types of problems that will avoid. You might want to try using authenticated SMTP. This might help getting that set up:

  http://www.barnard.columbia.edu/at/email/outlook-smtp.htm

 --- Original message ---

 Outlook 2007 for most of the clients under our domain are now having
 outgoing emails blocked by Spam Assassin, which our ISP uses. This
 started in late September (Outlook/MS update??). Simple Text emails
 with "hello" or "test" get scored over 30. If I switch the users
 over to "windows mail" vs. "Outlook" We have no problems but this is
 unacceptable, outlook is our standard. So the question is what is
 Outlook 2007 doing to the outbound mail to cause it to be scored so
 high with Spam Assassin. We are ready to move our mail accounts to a
 different i...@!@ Any help is appreciated.

--
 John Hardin KA7OHZ                    http://www.impsec.org/~jhardin/
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