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Internal domains spamming issues

on our exchange server 2 internal domains created but if users are sending emails to each other emails are going to spam folder instead of going to inbox can someone give the solution?
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Yogesh_Exchange_Expert
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Yogesh_Exchange_Expert
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Yogesh_Exchange_ExpertAuthor Commented:
Its an exchange 2003 senario with 1 frontend and 2 backend servers.
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Dimitris IoakimoglouNetwork AdministratorCommented:
are you using any third party anti-spam software?

my first thoughts are that your should configure it to whitelist all internal traffic for your own   domain(s) and let it scan through your incoming traffic only.

what is most probably happening is that it perceives a mail sent to a recipient on your domain as being sent from an external network (like internet) FROM another reciepient of the same domain, i.e. most probably a spammer.
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Yogesh_Exchange_ExpertAuthor Commented:
SORRY MY MISTAKE users are from same domain only e.g abc@microsoft.com and xyz@microsoft.com
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Yogesh_Exchange_ExpertAuthor Commented:
but on different mailbox servers
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Dimitris IoakimoglouNetwork AdministratorCommented:
are both servers on the same active directory domain? (for example microsoft.local)?

if not, are the 2 active dir domains trusted by each other?
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Dimitris IoakimoglouNetwork AdministratorCommented:
and another question. Are those 2 servers mailbox ONLY servers?

No hub transport roles, no client access on them? In other words is everything else on the front-end server?
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Yogesh_Exchange_ExpertAuthor Commented:
yes both the servers are on same local group and both servers are only mailbox servers also it is exchange 2003
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Dimitris IoakimoglouNetwork AdministratorCommented:
Sorry to be asking so many details but a) are those email tagged on their subject as spam? b) Do you use any kind of 3rd party antispam software either on the server or on the workstations?
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Yogesh_Exchange_ExpertAuthor Commented:
yes they are tagged as spam on the subject also they are using AVG antispam.
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Dimitris IoakimoglouNetwork AdministratorCommented:
Ok. Is avg centrally managed somehow? Is it on the server? I think AVG is wrongly tagging those emails and this is where you shoud search for rules.

this link here MIGHT help (I have no experience with AVG so I can't be sure)

http://www.avgforums.com/viewtopic.php?t=15
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Dimitris IoakimoglouNetwork AdministratorCommented:
Thanks for the points, out of curiosity though, what did you find the problem was?
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