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Home » Kerio User Forums » Kerio Connect » Kerio MailServer using System's Default IP (Can't stop Kerio from using system's default IP to send mail)
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vf1917

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Hi,

Just a quick question re: IP binding in Kerio. Under the Services tab, I bound all of the services to the specific IP I'd like Kerio to use and everything's working fine from a functionality perspective.

However, one problem I am experiencing is the fact that KMS is using the system's default IP to route outgoing mail and I think that's contributing to some problems with spam filters of popular e-mail providers like Yahoo, Hotmail and Gmail as there's a mismatch of IP's.

I have the proper A and PTR records setup for the IP I specified under Services along with a corresponding MX record. The problem is that in the message headers of outgoing mail, KMS is using the default system IP to route outgoing mail instead of the IP I specified under Services. Some e-mail providers may see this mismatch as suspicious and automatically flag it spam in the recipient's mailbox.

I tried looking at the mailserver.cfg file and changed the "BindIP" variable under "Misc" to the IP I want to use. However, KMS refuses to use that IP and continues to send mail using the default IP.

Any ideas on how I can stop KMS from using the default system IP to route outgoing mail?

Thanks.



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Mozilla77

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I'm not sure if this is same problem I had early on but when I was testing I had a test server ServerA and setup up test account. After testing I moved the data over to its permanent home but it retained the name of the old server and was attaching that to all the headers causing the domain to be blacklisted.

Click on domains in the admin console and at the top it says Internet hostname, put your corresponding MX record that you want on your headers here. Start and Stop the mail server.
  •  
ikheetleon

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Kerio mailserver is not a ip routing engine. I think the functionality you are looking for can be found within a router or firewall, not in a groupware (backend) solution like KMS.

The bind option is used for listening ports (inbound traffic to the mailserver), not outbound traffic, that's ip routing functionality.

Maybe you can make a routemap or static nat entry in your firewall or router?

Any traffic with destination port 25, origins from a specified source address. Or any traffic with source addres 10.x.x.x will use nat entry v.w.x.y?

Regards,

Leon
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sedell

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No, Kerio isn't an IP routing engine. On the other hand, just about every other mail server I've worked with allowed binding to a specific IP address for outbound mail.

Scott
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ikheetleon

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Personally I would never want an application to make ip routing decissions. That's up to the network. But from what I read in your post, Kerio is running on an outside ip address, is that correct?
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cwachs

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I agree with Sedell on this. The application should allow you to assign the IP associated with outbound traffic from a machine with multiple IP's. I have my Kerio in a co-location rack. I don't have my own router in that facility, I have to use the routers of the co-location ISP in order to get public IP's. Having them input router tables for this purpose is not an option. This is basic functionality that should be selected by the application. I am able to do this with every other application running on my servers except Kerio. Sendmail allows this. Communigate Pro does. Even my very old copy of Eudora Internet Mail Server allows this.

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Server installation:
Kerio Connect 7.1
OS X Server 10.5.8
Apple G4 X Serve
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anthony.somerset

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i found out previously from delving into the install directory that kerio uses sendmail to actually deliver the mail so i assume its just a matter of adding the option in the admin panel?

someone in kerio may be able to provide more info or correct me if i am wrong

Mac Xserve Intel - 2x 2.7GHz Dual Core Xeon
Leopard 10.5.8
4GB Ram
1.25 TB HDD Raid 5
Kerio 6.7.1
~60 Users (varying windows and mac Exchange or IMAP)
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