[isalist] Re: SMTP Outbound from different IP addresses
- From: "Jerry Young" <jerrygyoungii@xxxxxxxxx>
- To: isalist@xxxxxxxxxxxxx
- Date: Tue, 4 Mar 2008 10:07:06 -0500
T,
I read it differently. I thought the goal was to have them send using
DIFFERENT IP addresses so that if one gets black listed, the other two would
still be "good".
On 3/4/08, Thor (Hammer of God) <thor@xxxxxxxxxxxxxxx> wrote:
>
> http://www.ISAserver.org
> -------------------------------------------------------
>
> Receiving is easy... The goal was for all of them to SEND with the same
> IP, which you can't guarantee with ISA using multiple IPs on the
> external interface.
>
> t
>
>
> > -----Original Message-----
> > From: isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-
> > bounce@xxxxxxxxxxxxx] On Behalf Of Han Valk
> > Sent: Tuesday, March 04, 2008 5:39 AM
> > To: isalist@xxxxxxxxxxxxx
> > Subject: [isalist] Re: SMTP Outbound from different IP addresses
> >
> > http://www.ISAserver.org
> > -------------------------------------------------------
> >
> > Mmm I asumed that those SMTP serverd also needed to receive SMTP
> > traffic.
> >
> > ________________________________
> >
> > From: isalist-bounce@xxxxxxxxxxxxx on behalf of Jerry Young
> > Sent: Tue 3/4/2008 1:36 PM
> > To: isalist@xxxxxxxxxxxxx
> > Subject: [isalist] Re: SMTP Outbound from different IP addresses
> >
> >
> > I think this was for outbound traffic, not inbound.
> >
> > How would you ensure that the IP address ISA used to send mail to the
> > Internet changed? I can't think of any way it could; unless it can do
> > a
> > one-to-one NAT.
> >
> > A non-ISA server solution is available, though.
> >
> > Three mail gateways with external interfaces on them are used in the
> > mail
> > traffic path both inbound and outbound. ISA could then sit between
> > them.
> >
> > Would require 3 MX records, though, and some modification of the
> > Exchange
> > SMTP Connector (assuming Exchange inside) to use the mail gateways as
> > smart
> > hosts.
> >
> > Mail flow would then go Internet -> Mail Gateways -> ISA -> Exchange
> > for
> > inbound and Exchange -> ISA -> Mail Gateways -> Internet for outbound.
> >
> > Could get more clever with load balancing on either side but I figured
> > less
> > complexity with this example would help make it easier to understand.
> > :)
> >
> >
> > On Tue, Mar 4, 2008 at 5:45 AM, Han Valk <Han.Valk@xxxxxxxxxxxxxxx>
> > wrote:
> >
> >
> > http://www.ISAserver.org <http://www.isaserver.org/>
> > -------------------------------------------------------
> >
> > Why not? Configure 3 different IP addresses on the external NIC.
> > Configure 3
> > different SMTP server publishing rules each pointing to
> different
> > IP
> > address
> > on the external NIC.
> >
> > ________________________________
> >
> > From: isalist-bounce@xxxxxxxxxxxxx on behalf of Thomas W Shinder
> > Sent: Mon 3/3/2008 6:06 PM
> > To: isalist@xxxxxxxxxxxxx
> > Subject: [isalist] Re: SMTP Outbound from different IP addresses
> >
> >
> > Hi Rob,
> >
> > That would be a nice feature. But no, you can't do that.
> >
> > Thomas W Shinder, M.D.
> > Site: www.isaserver.org <http://www.isaserver.org/>
> > <http://www.isaserver.org/>
> > Blog: http://blogs.isaserver.org/shinder/
> > Book: http://tinyurl.com/3xqb7 <http://tinyurl.com/3xqb7>
> > MVP -- Microsoft Firewalls (ISA)
> >
> >
> >
> >
> > ________________________________
> >
> > From: isalist-bounce@xxxxxxxxxxxxx
> > [mailto:isalist-bounce@xxxxxxxxxxxxx] On Behalf Of Rob Moore
> > Sent: Monday, March 03, 2008 10:47 AM
> > To: isalist@xxxxxxxxxxxxx
> > Subject: [isalist] SMTP Outbound from different IP
> > addresses
> >
> >
> > Hello all-
> >
> > ISA 2006 Standard.
> >
> > I'm guessing this is a fairly simple question. Hope so,
> > anyway.
> >
> > We have three servers that do SMTP outbound. Is there a
> > way to
> > have
> > each one send SMTP traffic from a different IP address on our
> one
> > ISA
> > server?
> > I'd like to isolate them to different IP addresses so when one
> > gets
> > blacklisted (as happened over the weekend) they don't all get
> > blacklisted.
> >
> > Thanks,
> > Rob
> >
> >
> >
> > ++++++++++++++++++++++++++++++++++++
> >
> >
> > May your life preach more loudly than your lips.
> > --William Ellery Channing
> >
> >
> > ++++++++++++++++++++++++++++++++++++
> >
> >
> > ________________________________
> >
> > Never miss a thing. Make Yahoo your homepage.
> > <http://us.rd.yahoo.com/evt=51438/*http://www.yahoo.com/r/hs>
> >
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> >
> >
> >
> >
> >
> >
> > --
> > Cordially yours,
> > Jerry G. Young II
> > Microsoft Certified Systems Engineer
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--
Cordially yours,
Jerry G. Young II
Microsoft Certified Systems Engineer
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