[c-nsp] SMTP Redirection

[Jason Percle]

Couldn't something like this be done with route maps, similar to the
interception proxy method with Squid:

For example:

The second line in acl 125 will give the mail server direct access to the
net to prevent a routing loop

route-map smtp-redirect permit 10
 match ip address 125
 set ip next-hop mail.server.ip

access-list 125 deny   tcp any any neq 25
access-list 125 deny   tcp mail.server.ip any
access-list 125 permit tcp any any

interface (Outbound interface)
 ip policy route-map smtp-redirect


Jason

-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Paul Stewart
Sent: Friday, June 30, 2006 4:30 PM
To: Joshua Lauer; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] SMTP Redirection

We've looked at SLB for other applications but I'm not sure how it would
tie into redirecting SMTP?  Can you explain in brief what you have in
mind?

Thanks again,

Paul
 

-----Original Message-----
From: Joshua Lauer [mailto:jslauer at hotmail.com] 
Sent: Friday, June 30, 2006 4:48 PM
To: Paul Stewart; cisco-nsp at puck.nether.net
Subject: Re: [c-nsp] SMTP Redirection

have you looked into SLB (server load balancing) works great for SMTP.

Josh

Joshua Lauer

CCIE#16024
CCNP, CCDP, CCSP, CCIP, RHCE, INFOSEC

----- Original Message -----
From: "Paul Stewart" <pstewart at nexicomgroup.net>
To: <cisco-nsp at puck.nether.net>
Sent: Friday, June 30, 2006 2:16 PM
Subject: [c-nsp] SMTP Redirection


> Hi there..
>
> I've been trying to find a way using Cisco IOS to 
> forcefully redirect
> SMTP traffic to a specified source.  So we have 
> 1000 users at a remote
> site for example and some want to use specific 
> SMTP servers for sending
> out mail but we want to force their SMTP traffic 
> to our mail server ...
> Just an example...
>
> Anything creative that can do this in IOS?
>
> Thanks,
>
> Paul Stewart
> Network Administrator
> Nexicom Inc.
> http://www.nexicom.net/
>
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