A newly created recipient may not receive e-mail messages for up to 4 hours

steveb — Wed, 07 Jan 2009 21:42:00 GMT

Thanks to Susan Bradley for bringing my attention to this Microsoft KB. It looks like in Essential Business Server 2008 if you create a new recipient and attempt to send them mail, it can take up to four hours for the Exchange Edge Server to synch up to the Messaging Server unless you manually run the Start-EdgeSynchronization cmdlet and force a synch, resulting in a 550 5.1.1 User unknown NDR being generated.

See Microsoft KB 961303 for the details. Looks like they are still updating the KB as of this time.

Steve

EBS Edge Server Message Routing

steveb — Wed, 08 Oct 2008 18:45:00 GMT

EBS 2008 Edge Server Message Routing
Two send connectors are created – one to send mail to the Messaging Server and on to send mail to Internet. We are being told that mail will queue during setup so don't leave a production network hanging after this step for too long as it will be queuing up on you.

The connectors are created with these settings:

Connector to send mail to the existing mail server (Exchange or non-Exchange)

Name; SendToMessaging
Address Space: --
Port: 25
Source IP: <Internal IP Address of Security Server>
SmartHost : <IP Address of the existing mail server>
TLS Required: False
Usage: Intranet
Enabled: True

Note: The “—“ address space is used to send e-mail to all accepted internal domains.

Send connector to the Internet
Name; SendToInternet
Address Space: *
Port: 25
Source IP: <External IP Address of Security Server>
TLS Required: False
Usage: Intranet
Enabled: True

The other steveb - Steve Banks' Blog on SBS, EBS, and other Small Business Technology Topics : Edge Server

A newly created recipient may not receive e-mail messages for up to 4 hours

EBS Edge Server Message Routing