On 01/04/2011 11:41 AM, Simon Hobson wrote:
How about :Change the port forwarding on site A to send SMTP traffic to the server at site B. Configure the server to use Site A router for it's external gateway ? If there isn't too much traffic then just do it for the whole server, otherwise use policy routing to send just SMTP traffic via site A. Also, how dynamic is the address at site B ? If the address only changes infrequently, and this is a temporary setup, then could you get away with setting a short TTL on the MX record and changing it as required ? Or even use one of the dynamic-ip-to-dns services for the hostname in the MX record.
The ip address changes about once every 24 hours, the DNS MX record is not an issue cause I serve my own DNS. However, you cannot mail to google from a dynamic DNS that is google rejects you with 550 message.
Or, setup a temporary mail server at site A, with the same config (user accounts etc) as the main server, but forwarding all received messages to the other server.
This tends to be the most real solution with the least effort. Thanks a lot All. harry.
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