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in the domain settings i noticed an option "bind this domain to a specific ip".
under it it is explained how this will automatically append the domain to users connecting to that ip. Does this also works for outgoing smtp?
I would like to force a specific domain to use a specific ip for sending email, while all others domain would continue to use another ip. Is this possible?

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No, you can't choose which IP address the mailserver grabs to send mail. Even in a single domain setup with multiple IP addresses it can't be done - I've tried. The option to bind a domain to an IP address only works for incoming authentication.


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This is due to the fact that like any other program, KMS simply sends a request to the OS to send out a packet. The OS then decides how to send out the packet. 99% of programs out there are unable to control what IP address will be used for outgoing packets.

In order for KMS to 'bind' outgoing messages to a particular IP, we would need to write a KWF-level TCP/IP layer driver for KMS, which probably isn't going to happen.

Kevin Trumbull
Kerio Technical Support Team Leader
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