I'm looking into this same thing right now.  We have the Routing
Restrictions set up same as you do Bill and it works fine when sending to
an internal recipient.  However, it will not send to an smtp address
outside of our company.  I was reading Q196626 and it looks like we are
supposed to have the Mask set to 255.255.255.255.  Can anyone confirm if
this is correct?

Thanks,

Jessica Williams


> Sounds ok to me I do the same..
> 
> here's what I do to allow my unix box to relay thru my 55 box
> Exchange Admin tool, Connections, IMC ROUTING tab, Routing Restritions
> button, check Host and cllients with these IP adresses
> then I have the IP of the unix box in there
> 
> Did you stop and Restart your IMC???
> 
> bill
> 
> -----Original Message-----
> From: Aaron Brasslett [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, March 02, 2004 11:46 AM
> To: Exchange Discussions
> Subject: Exchange 5.5 relaying
> 
> 
> Hi all,
> 
> I'm trying to configure my Exchange 5.5 SP4 server to allow SMTP relaying
> from a single host, but I haven't been successful.
> 
> I have Reroute incoming SMTP mail selected on the Routing tab of the
> Internet Mail Service.  Under Routing Restrictions I have selected Hosts and
> clients with these IP addresses.  In that list, the IP of the host that I
> would like to have relay in entered.  Nothing else on this screen is
> selected or has entries in it.
> 
> When I try and relay, I receive a 550 Relaying is prohibited message. 
> 
> What am I missing here?
> 
> TIA,
> 
> Aaron
> 
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