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Exchange 2010 and delays to AOL

I have a brand new exchange 2010 install. all is right with the world except that when domain users send mail to AOL, it is delayed and eventually expires.

Ideas?

ASKER CERTIFIED SOLUTION

Alan Hardisty

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crp0499

ASKER

It says .local so I'll start there. I saw your other, more detailed post on this issue and I'll chase it in the am

Alan Hardisty

Ah! That will cause you issues.

AOL have tightened up security recently and have got much stricter about mail-flow.

Also - if you email my server with .local in your FQDN - I have a rule to reject you because .local is invalid. It only causes about 1% of mail to be rejected on my server - but it is invalid and cannot be resolved, so needs to be changed.

crp0499

ASKER

Will be on it in the am

Alan Hardisty

No problems. I am installing cabling tomorrow but will be around from time to time.

If you need more help - just shout.

Alan

crp0499

ASKER

ok, my send connector has mail.mydomain.com in it now. however, I have no DNS entry for mail.mydomain.com. When I do an nslookup on mail.mydomain.com, it comes back null. I ONLY have a DNS entry for mydomain.com and all my mail goes there.

So, I'm thinking I need to change the send connector to read just mydomain.com

Also, with my ISP, I have no reverse DNS. Reverse DNS points to SBC Global, my DSL provider.

your thoughts?

Alan Hardisty

If you don't have a DNS entry for mail.yourdomain.com - you can add one (and ask your ISP to add mail.yourdomain.com to the Reverse DNS record for your IP Address) or change the FQDN to yourdomain.com, then call your ISP and ask them to add yourdomain.com as Reverse DNS to your Fixed IP Address, then you should be much happier to send to AOL.