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We have some automated software that checks certain Exchange 2007 mailboxes via POP3. When a customer's incoming e-mail requests a read receipt, Exchange seems to be sending back a non-read receipt.

Not read: <subject> 
Your message was deleted without being read on...

The order in which the software issues POP3 commands is

USER 
PASS 
STAT 
UIDL 
TOP # 0 
LIST # 
RETR # 
TOP # 0 
RSET 
DELE # 
QUIT

Our exchange administrator has been able to duplicate this issue via raw POP3 commands over telnet, port 110. The commands he ran were simply

USER 
PASS 
STAT 
RETR # 
DELE # 
QUIT

Does Exchange 2007 translate POP3 commands to read flags? If so, it should tell that I've issued a RETR command to retrieve the message. Is this a bug? Is there a way to disable the sending of read receipts for specific mailboxes or globally?

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4  
I prefer to become violent with people who use the "Read Receipts". That seems to work for me. (It'd be nice to be able to disable the feature organization-wide in Exchange. Perhaps even administer electrical shocks to the people who try to use it thru their mice...) –  Evan Anderson Jun 18 '09 at 13:22
2  
Funny, but shocking our customers might shock our bottom line. –  Leigh Riffel Jun 18 '09 at 13:26

1 Answer 1

up vote 2 down vote accepted

This looks to be an interesting problem. I found a few links to ansewrs, but it looks like this one is the best of the bunch. MSexChange

Synopsis...

a sure fire way of ensuring read receipts are not sent to external people is to configure FOUR transport rules... Rule 1:
From users outside the organization
Remove header "X-Confirm-Reading-To"
Rule 2:
From users outside the organization
Remove header "Disposition-Notification-To"
Rule 3:
From users outside the organization
Remove header "Return-Receipt-To"
Rule 4:
From users outside the organization
Remove header "Receipt-Requested-To"

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This works exactly as I hoped it would. –  Leigh Riffel Jun 19 '09 at 15:55

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