Re: Hosted Multiple Domains w/ Unique IP's SMTP Issue

Unfortunatly you cannot do this. IP selection for outbound connections is
determined by the OS using the "best interface".

You should consider publishing SenderID records that include your outbound
IP addresses for each of the domains that you are hosting. That way the spam
blockers that support SenderID will know that it is OK for your servers to
send mail on behalf of your hosted domains.

--Matt

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"OUhost" <OUhost@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:2D428A76-6709-40E3-B271-F91480646E94@xxxxxxxxxxxxxxxx
I've noticed a few posts in reference to my issue, however there is no
definative answers. Here's my issue...

I'm hosting multiple domains for groups (student organizations) and each
virtual domain has it's own unique IP address. My domain is set to the
default smtp server (eg. host.net). Each group can send and receive emails,
however when emails are sent they always use my default domain (host.net)
and
my Domains IP address. This now seems to be an issue because org1.com on
xxx.xxx.xxx.103 is being sent with header information to the effect that its
from host.net on xxx.xxx.xxx.100 and spam blockers think it's spam because
the domains and/or IP addresses don't match. Apparently this has been going
on for a very long time and only just recently caught.

Is there anyway to make sure that if a group sends an email that it will be
addressed correctly with the correct domain and IP address? Thanks in
advance and any help would be greatly appreciated.

Ed


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