[isalist] Re: SMTP Outbound from different IP addresses
- From: "Jerry Young" <jerrygyoungii@xxxxxxxxx>
- To: isalist@xxxxxxxxxxxxx
- Date: Tue, 4 Mar 2008 10:30:01 -0500
Sending versus receiving isn't the difference in semantics I'm working to
ferret out. :)
It's 1 IP address versus 3 IP addresses. ;)
On 3/4/08, Thomas W Shinder <tshinder@xxxxxxxxxxx> wrote:
>
> You two are saying the same thing!
>
> Tim - SEND
> Jerry - send
>
> HTH,
> Tom
>
> *
>
> Thomas W Shinder, M.D.
> Site: www.isaserver.org
> Blog: http://blogs.isaserver.org/shinder/
> Book: http://tinyurl.com/3xqb7
> MVP -- Microsoft Firewalls (ISA)
> *
>
> ------------------------------
> *From:* isalist-bounce@xxxxxxxxxxxxx [mailto:isalist-bounce@xxxxxxxxxxxxx]
> *On Behalf Of *Jerry Young
> *Sent:* Tuesday, March 04, 2008 9:07 AM
> *To:* isalist@xxxxxxxxxxxxx
> *Subject:* [isalist] Re: SMTP Outbound from different IP addresses
>
>
> 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 <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 <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/> <
> > 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
>
>
--
Cordially yours,
Jerry G. Young II
Microsoft Certified Systems Engineer
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