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DNS and PIX 515

By gregori65 ·
I configured a PIX firewall with one outside public address given by my ISP. Users from the internal network (where both a w2k AD and an Exchange server are) are able to use internet and send e-mail. But still I have problem receiving e-mail from internet. PIX configuration seems to be fine but I was told I need to make sure I have an A MX entry for the PIX on the DNS. Can anybody explain me what it needs to be done on DNS in order to recive e-mail from outside???
Thanks for your help...

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by shawn In reply to DNS and PIX 515

Your DNS zone should have an MX record which points to your external (ISP-assigned) IP address. On the PIX, you will need to configure a rule to allow incoming mail (which will initially be coming to your external IP, because of the MX record)to be forwarded to your Exchange server on the internal network.

Hope this helps.

Cheers,
Shawn

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