ksquires
Joined: 31 Mar 2010
Posts: 1
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 Posted:
Wed Mar 31, 2010 1:44 am Post subject:
using 2 SMTP vitual servers |
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I have a client who uses an external spam-filtering service - MX records direct the mail to the service, then they push the mail to Exchange. The SMTP virtual server is set to only accept mail from this one IP address to prevent spammers circumventing it. This all works great.
Client now wants POP3/SMTP access for smartphones. If I open the SMTP virtual server to all IP addresses, I risk a flood of spam, so I need to set it to require verification. The spam-filter service can't handle this, so I think the solution is to have 2 SMTP virtual servers, one allowing anon access, but only from the spam-filtering service, and one open, but requiring authentication. I tried creating this second virtua server, but it's not working, presumably because there's no way for incoming traffic to know which SMTP virtual server to hit.
Can someone help me here, or at least point me in the right direction?
Thanks!
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