Ok, but we don't use "Subscribe = ,confirm, because first of all the emails
come from a website from example and stored in a database, I feed the email
structure , email list to listserv so the people who is subscribing to our
list don't really have to confirm they subscribed but they can unsubscribed
anytime thought with another system. Also on the website we can always do a
Regex validation who verify is the email address structure is valid but
that's a front line validation only and it's have nothing to do with bounce
really so I guess we have on our system to get these bounce email and clean
our list. Thx for your time by the way, I really appreciate it. :)    

-----Original Message-----
From: LISTSERV site administrators' forum
[mailto:[log in to unmask]] On Behalf Of Valdis Kletnieks
Sent: Wednesday, March 29, 2006 1:04 PM
To: [log in to unmask]
Subject: Re: Bounced Email

If you have a million addresses, and half bounce, you *will* get into
everybody's
spam filters, because it will look like a "dictionary attack".

Also, if your data is *that* crufty, you almost certainly didn't get a
verified
opt-in from the addresses, which will make you very suspect in many people's
eyes.
(Listserv's "Subscribe = ,confirm" meets any sane definition of verified
opt-in).

If more than 1% is bouncing, you have problems.  Big ones. Even 1% is 10K
bounces for a million-address list.  And you should only be seeing 1%
bounces
on a list that's getting infrequent (monthly or so) postings, simply because
1%
of the people will get new e-mail addresses each month or so.  And if you're
posting to the list weekly and washing your list, you should be well under
1K
bounces/posting.