Send/Receive 'invisible' messages

[Colin]

Every third or fourth 'send receive' Outlook shows a message being sent, yet
I haven't written one. It isn't shown in the sent box like the ones I have
written yet it is also 'cleaned' by Norton Antivirus as are all known written
messages. I have the following protection on my computer: Spybot - search
destroy, Ad-aware, Norton Antivirus 2005 with updates and Zonealarm all
running and nothing untoward is reportedly on my hardrives etc.
Can anyone suggest what these 'invisible' messages are and how I can prevent
them - also, where are they going?

 

[K. Orland]

What version of Outlook are you using? These could be read receipts that
people have requested from you.

 

[Colin]

Outlook XP. If they are receipts they are ones automatically sent that I
can't view anywhere or ones where I don't see a dialogue box requesting them.
I do ocassionally have a dialogue box appear asking if I want to send a read
receipt but these doesn't show on the send/receive box and aren't normally
picked up by Norton.

Thanks for your reply.

Colin.