Hello, Could anyone advise how the enclosed Government Connects requirement could be configured on an Exchange 2003 server: "the mail server must establish all connections to the mail proxy (irrespective of whether the email is inbound or outbound), from a technical perspective the mail server would always initiate the TCP 3-way handshake with the mail proxy and not the other way round. From a practical perspective this means that the mail server will periodically 'contact' the mail proxy to found out whether there is any inbound email waiting to be delivered. The intention of the control is to prevent the possibility of unauthorised access to the mail proxy providing onward connectivity to the mail server" Thanks

That sounds like ETRN, which is configured on an SMTP Connector. Simon.Simon Butler, Exchange MVP. http://blog.sembee.co.uk , http://exbpa.com/

On Thu, 22 Jul 2010 14:46:08 +0000, Sembee wrote: > > >That sounds like ETRN, which is configured on an SMTP Connector. Sounds that way to me, too. "the mail server must establish all connections to the mail proxy (irrespective of whether the email is inbound or outbound). . . " I love the way they word this! ". . . TO the mail proxy" -- but what about FROM the mail proxy? And since when does a proxy act as a relay server? Proxies either pass the mail directly to the server or reject the message, they don't act in a store-and-forward fashion. :-) --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Thanks for the advise.. I've had a go this morning to setup ETRN on the SMTP connector today, but it doesn't seem to be working as expected. I've selected the option "request ETRN/TURN from different server" & entered the Government connects server in the server name: smtp.gcsx.gov.uk The connection time has been set as "run Daily at 11pm" & the option to "issue ETRN" has been selected. The domain "staffordshire.gcsx.gov.uk" has also been added into the "Domains for which ETRN should be used" section. I've then restarted the SMTP service & the routing engine services. However, when I come to send a test email to an echo account at "gcsx.gov.uk" it replies immediately rather than at the specified time. Is there anything else I need to do to get this working?