I recently unchecked the Refuse Null <> Senders checkbox from

IMail Administrator | localhost | Services | SMTP | SMTP Security

after receiving an angry auto response from another server noting that the RFCs state 
all mail hosts should accept mail from null senders.  Checked with the RFCs, angry 
autoresponder was correct, uncheck the box � no big deal!

Since making the change, I�m noticing a lot of messages sitting in the queue from <> 
to email addresses that are not part of my domain (e.g. [EMAIL PROTECTED]).

I restrict mail relay by IP subnet and have from the beginning.

Question 1: Are these messages actually being originated from the Imail server itself? 
 Specific case from the example above would be [EMAIL PROTECTED] sent a message to an 
email account that no longer or has never existed on the system and Imail is 
attempting to contact [EMAIL PROTECTED] to inform them of the issue but cannot since 
(probably) webstakesbnc does not exist since it was likely a spammer address.

Question 2:  Is it cool to just delete these at will?

Thanks!

Sean


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