Mail not being received

Hi All,

We seem to be having issues with receiving emails to our exchange server.  We are getting most email but there seems to be a lot that just never make it to our exchange server or inboxes.

We are running Windows server 2003 with Exchange 2003.  We have GFI Ver.14.1.  When I check the dashboard for GFI there is no sign of the missing emails.  Also when I check the message tracking in Exchange there is no sign of the email.
all the email addresses are on the whitelist in GFI so they shouldn't be getting blocked from there.

I am totally baffled as to why we would not be receiving these emails.  Any suggestions or help would be greatly appreciated.
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IBISKAConnect With a Mentor Author Commented:
So it turns out it was a rule on the ISA that was blocking the mail from coming in.  THanks for the help everyone.
have you checked gfi mail logs to see if anything has been bounced back due to size or encryptioln ?
IBISKAAuthor Commented:
I have only looked on the dashboard.  Would it not show it on the dashboard?  If not where would i check that?

Thanks for getting back to me.
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Will SzymkowskiSenior Solution ArchitectCommented:
Do you know if this is from a specific domain or just a specific user within a domain? Does the user that is trying to send you email get a NDR error message?
IBISKAAuthor Commented:
It is happening for several different people from different domains. As far as I know they are not getting any NDR messages. one was from a email, others are from private domains, one was from All the addresses in question are also on the senders whitelist in GFI.  
Will SzymkowskiSenior Solution ArchitectCommented:
Try using and see if you domain comes up blacklisted.
IBISKAAuthor Commented:
I have already checked and we are not on any blacklists.
Alan HardistyConnect With a Mentor Co-OwnerCommented:
If the mail is not hitting GFI or your Exchange server then it is not getting to you, or being filtered before it gets to GFI.

Please check your domain on and check to see if your MX record is pointing to where you think it should be pointing.

Do you use a 3rd party spam service or does mail arrive directly to your server?
IBISKAAuthor Commented:
Hi Alan,

We are not going through any 3rd party spam filter.
I went to that site and ran it.  It all came back ok as far as I can tell.

220 Microsoft ESMTP MAIL Service, Version: 6.0.3790.3959 ready at Tue, 14 Sep 2010 13:06:36 -0400

 Not an open relay.
 0 seconds - Good on Connection time
 5.398 seconds - Warning on Transaction time
 OK - resolves to
 OK - Reverse DNS matches SMTP Banner

Session Transcript:
250 Hello [] [78 ms]
250 2.1.0 OK [62 ms]
550 5.7.1 Unable to relay for [5054 ms]
221 2.0.0 Service closing transmission channel [78 ms]

Alan HardistyCo-OwnerCommented:
"If the mail is not hitting GFI or your Exchange server then it is not getting to you, or being filtered before it gets to GFI."
You had not mentioned that you had ISA server - which would have been useful to know and may have resulted in an earlier resolution.

IBISKAAuthor Commented:
My bad your right i should of mentioned that.
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