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Some Incoming Mail Disappearing/Not Being Delievered

I am running Exchange 2003 on a Windows 2003 box and we are having issues with some incoming mail not being delivered.  We were using two forms of SPAM filtering, Postini and GFIMailEssentials.  We went over our license for the GFI product stopped working, but now some incoming mail seems to no longer be delivered.

One example, we have a user with a Gmail account who when he sends mail to his exchange account it doesn't go through.  There is no bounced message and nothing that I can see on our server.  Also, no record of it hitting Postini.  I can send items from my Gmail account and they come right though.

Any thoughts?
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PunkGeek
Asked:
PunkGeek
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1 Solution
 
LegendZMPrincipal Security ArchitectCommented:
Does that user receiving any bounce backs to their GMail account?
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PunkGeekAuthor Commented:
No.
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LegendZMPrincipal Security ArchitectCommented:
And you've made all the necessary changes to your DNS/MX records since you phased out  GFIMailEssentials
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PunkGeekAuthor Commented:
I didn't think there were any MX record changes since our MX records point to Postini and we have GFIMailEssentials loaded on the same box as the Exchange Server.  That machine is our main AD/DNS/Exchange box.
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LegendZMPrincipal Security ArchitectCommented:
Ok, I wasn't sure if the GFIMailEssentials was on the same box or not, Is the product still installed? If it's no longer in use, have you tried uninstalling to see if mail flow occurs?
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PunkGeekAuthor Commented:
I will try removing it since I was planning on it, but didn't want to do it during the middle of the day in case it effects the exchange services.
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LegendZMPrincipal Security ArchitectCommented:
Definitely don't uninstall it during production hours, but i'll be around all day for when you do uninstall it and if problems continue to occur.

Just to confirm, no messages sent from internal to outside world disappear right?
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PunkGeekAuthor Commented:
Nope, we have 0 problems with outgoing mail.
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PunkGeekAuthor Commented:
Thanks, I think this solved the issue, but sadly at the same time I did this our helpdesk tech changed the levels in postini so we don't know which actually helped.
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