[ILUG] A script to extract email addresses from Delivery Failure messages

[Kieran O'Sullivan]

Hi 
Thanks for the code and the corrected version it works very well infact it 
works too well.  I can get ALL e-mail addresses contained in a file.

My problem is like this say I send a message to a person on hotmail who 
has cancelled their account I get a mail with a line of code in it 
something like this

550.1.1 <emailaddress at hotmail.com> Does not exist.

However another server might say

I have given up on <emailaddress at somedomain.com>

I don't want dead addresses on my mailing list and I am sure that there 
must be a piece of code which knows how to read any mail delivery message 
and can say. Yes that is a dead mail address or no that is just an out of 
office reply.

Has anyone come across this type of thing before?  I simply do not have 
enough sample data to be able to write it myself and I would definitely 
miss something.