First up, set the user forward rule return path to construct non-deliverable return addresses - if you're running 8.5, you can do this via the configuration document (the field is just below the one that disables mail rule forwarding). If you're pre-8.5, then you need to set the following parameter in the notes.ini:
Next, create a mail rule in your configuration document. If you have designated servers that deal with all internet e-mail, the rule should only need to be created on those servers. Set the criteria to:
When sender contains nobounce AND any Recipient contains @ AND any Recipient contains .
That *should* limit the rule to messages sent to internet addresses via a mail forwarding rule - although you'd have to make sure your users were using the Notes address rather than the internet e-mail address in their rules. You can then set the action to 'Do Not Deliver' and either silently delete the message or send an NDR.
I'm sure there's probably a hole in my logic somewhere (and I'd like to think I've missed an easier way to do this) but I think this should sort you out.
Already tested it ( also with 8.5.3 ) and it worked fine !!!
Today I received an Alert Flash regarding issues on IBM Notes/Domino Feature Pack 10 with the hint to stop upgrades. Currently the following issues are known: (fix available) The IBM Sametime client embedded within the IBM Notes client stops working after you install Notes 9.0.1 FP10 on top of Lotus Notes 9.0.1 FP9 + Sametime Embedded build 9.0.x clients http://www-01.ibm.com/support/docview.wss?uid=swg22012939(verified by L2) SMTP Mails with Umlauts broken after installing FP10 This seems to be regression. Support is working.(verified) Group iQ.Suite - Out of License because the internal product numbering has changed. The API reports a different version number. Before upgrade eg 184.108.40.206.0.0 => 9.0.1 FP9, after upgrade 900.0.11.0.0.0 => 9.0.1 FP10 Group is informed and can assist. Group will provide Hotfixes of iQ.Suite (19.1.5, 20.2.3 or 20.3) soon.(not yet verified) org.eclipse.core.runtime.CoreException: Plug-in http://com.ibm.domino.java .api was unable to …
The JVM in Designer is Upgraded to use 1.8 at compile time Eclipse Platform Upgraded to 4.6.2Embedded Sametime Upgraded To 901 By Default Add-on Installer for Notes CCM (Connections Content Manager)
The full listing of the new features are listed here: