Placing e-mail server in DMZ is reliable or not ?

Hello All,
Placing e-mail server in DMZ is reliable or not ? (Both in Security wise and as well as Traffic wise)

Thanks,
Rao.
LVL 13
PillalamarriVenkateswaraRaoAsked:
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ksingh_americaCommented:
Yes, it belongs in your DMZ (it serves the Internet, right? Therefore, it goes in the DMZ). If the mail being delievered is solely for internal users and they only need internal access, you could setup a relay box in the DMZ that does spam/anti-virus processing and gets mail to/from the Internet. You could than have the delievery server (running POP3/IMAP) inside your LAN. You configure the relay box to deliever to the delivery server.
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ksingh_americaCommented:
make sure you don't get blacklisted as because may be later  you're being used as a spam gateway or for relaying mails outside.
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PillalamarriVenkateswaraRaoAuthor Commented:
Thanks for the Quick Responce.
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