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note560book

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Hello!

I got windows dedicated server with 3 IPs:
22.22.22.5 - primary default ip. 22-22-22-5.server.dedicatedprovider.com
22.22.22.6 - domain1.com
22.22.22.7 - domain2.com

The primary IP address bound to the external interface of the Mail Server is always used and mail going to Bulk folder at Yahoo and Junk folder at Hotmail.

I need to bind a specific IP address.
For example: outgoing ip for <_at_>domain1.com mail must be 22.22.22.6 (not default 22.22.22.5).
This is an important issue because many benighted network admins will use reverse lookups on their SMTP servers as a very crude and ineffective method of spam control.

How to do it with kerio mail server?
May be it's possible to configure kerio mail server to send mail to Inbox folder anyway?

ps: could you please suggest any software?

Thank you.
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sedell

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I tried, and couldn't find a way to do this. The best solution I could come up with was to:
1. Make the IP address you want Kerio to use the default (most mail will use that IP)
2. Set up PTR records for the other IP addresses. Most mail servers look for a valid PTR. If they do verify them, they verify the domain part of it, not necessarily the entire host name.

Since doing this, I haven't had a single problem with rDNS lookups.

I've also read that adding the other IPs to your MX record with a really high weight (and allowing KMS to listen on all IPs) will help alleviate the problem, but I haven't found a need to try this one yet.

Scott
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