How Exchange2003 handle auto reply mail loop

[zaccaz]

Hi there,

For Exchange2003 with Outlook2003, user1 and user2 both set "out of office" auto reply rule, then I send email to both user1 & user2, user1 & user2 will start generate auto reply loop forever.

Wondering if Exchange2003 has some mechanism to detect such auto reply loop & stop it?

Also how about the case if user1 is internal user, while user2 is external user? Can Exchange2003 detect such auto reply loop & stop it?

Many thanks!

 

[NickFerrar]

Yeah it does have loop detection, I think it's just based off the message header information. It should work the same for internal and external loops, although we managed to circumvent it as the external mail server someone was auto-forwarding to had a generic "this person does not exist at this location" kind of message which actually generated a new email rather than an auto-reply loop so our Exchange server got flooded anyway.