># but no longer are. Same with refusing <>. It causes other postmasters
># troubles.
>It only causes the postmasters that allow their mail users that SEND mail
>with null headers problems the way I see it
The problem arises if you send an E-mail to a non-existant user on one of
our domains. If our mail server bounces the message back to you, your mail
server is going to choke on it, and send it back to
[EMAIL PROTECTED] Then, we have to deal with your
mistake. That's why many mail admins want to use this new
dsn.rfc-ignorant.com test.
>If every mail server blocked null senders, the problem would probably go away.
Yes, but nobody would ever get any bounce messages. Bounce messages are
there for a reason.
>According to my logs, my mail server bounces between 5 and 10 messages a day
>based on null sender.
Have you checked to see how many of those are spam, and how many are bounce
messages that you're making another postmaster deal with (perhaps the one
that is going to block your mail server)?
Even if they are all spam, how many spams do you get per day that don't use
the NULL sender? I've just gone back a bit further, and of the past 68
spams we've received, not one has used a NULL sender.
Of course, you are free to block NULL senders, just so long as you are
aware of the possible consequences. If you know the drawbacks, and still
want to do it, it's your choice. My goal is just to make sure that you and
others are aware of the drawbacks, and why we feel it's a bad choice.
-Scott
Declude: Anti-spam and Anti-virus solutions for IMail. http://www.declude.com
Please visit http://www.ipswitch.com/support/mailing-lists.html
to be removed from this list.
An Archive of this list is available at:
http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
