Problem with Delivered-To Header
 

Really hope someone has a solution to this problem.

Email process in plesk (qmail) will be tagged with a number just before the email address in the email header.

Example:

Return-Path: <m.sheabv@stageone.dk>
Delivered-To: 100-email@abc.com.sg
Received: (qmail 18295 invoked by uid 110); 18 May 2004 04:39:24 -0000
Delivered-To: 100-ip@abc.com.sg

Where "email@abc.com.sg" is the catch-all box.

Then a POP3 downloader will collect email from the plesk server to deliver email to the exchange server.

Problems:
1) When someone BCC to a user of abc.com.sg, an error of "NO VALID RECIPIENTS FOR MESSAGE" occur.

2) Same problem when someone send to a mailing list, where a user of abc.com.sg is in the list.

No problem when To: & CC: field has a valid email address of the recipients.

So the tagging of a number before the email address in the email header become an invalid email address when it reach another email server like exchange server, thus resulted in mail delivery error.

Any ideas anyone?