Auto-delete is one of your list keywords. You can get a full explanation if you go to list management-list configuration-alphabetic keyword list.  This is a very useful tool.

-----Original Message-----
From: LISTSERV site administrators' forum [mailto:[log in to unmask]] On Behalf Of Sante La Civita
Sent: Thursday, October 27, 2011 2:29 PM
To: [log in to unmask]
Subject: Re: Receiving double unsubscribe emails

Where do I find Auto Delete?

-----Original Message-----
From: LISTSERV site administrators' forum [mailto:[log in to unmask]] On Behalf Of Valdis Kletnieks
Sent: October-27-11 11:14 AM
To: [log in to unmask]
Subject: Re: Receiving double unsubscribe emails

On Thu, 27 Oct 2011 09:59:20 EDT, Sante La Civita said:
> How do I configure listserv to tell me if I have incorrect email 
> addresses in my list.  Currently listserv will delete bad addresses from the list.

You probably want 'Auto-delete = No'.

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