after mx record change emails still filtering to old exchange server
I have an exchange 2007 sitting with an older dc 2003 server. I had changed the mx records on Friday and it seemed emails have gone through. But then yesterday email started delivering back to the previous exchange. all mail records are correct double checked.
I had a mcafee spam server which I disabled. What else should I look for that can cause this issue. So users are working while others are not.
any ideas really appreciated.
I had a mcafee spam server which I disabled. What else should I look for that can cause this issue. So users are working while others are not.
any ideas really appreciated.
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ASKER
both helpful thanks.
I feel I'd need A few things to review:
Things to consider:
Mail can still be delivered using an "A" record.
Bad DNS cache somewhere keeping your old record?
Other thoughts
Is the mail being received by the odd server coming from a few sites? Maybe those sites have a permanent forward to the old server.
The only way to solve this I feel is by looking at the mail header to get more information. Maybe email headers a few have something in common.
Things to consider:
Mail can still be delivered using an "A" record.
Bad DNS cache somewhere keeping your old record?
Other thoughts
Is the mail being received by the odd server coming from a few sites? Maybe those sites have a permanent forward to the old server.
The only way to solve this I feel is by looking at the mail header to get more information. Maybe email headers a few have something in common.
ASKER
thanks for the A record recommendation overlooked it, there was one record, that I changed. But mail has been going through well.
ASKER