It only causes the postmasters that allow their mail users that SEND mail with null headers problems the way I see it. If every mail server blocked null senders, the problem would probably go away.
According to my logs, my mail server bounces between 5 and 10 messages a day based on null sender. Not including the Outlook Return Receipt senders.
# -----Original Message----- # From: IMail_Forum-owner@list.ipswitch.com # [mailto:IMail_Forum-owner@list.ipswitch.com]On Behalf Of R. Scott Perry # Sent: Saturday, May 12, 2001 8:51 AM # To: IMail_Forum@list.ipswitch.com # Subject: Re: ORBSSRC: RE: [IMail Forum] Time to fix "Refuse NULL <> # Senders" option! # # # # >I have null senders blocked at my mail server. About 80% of the # spam I get # >has null senders. # # Really? Out of the last 19 E-mails that came into our spam traps, not a # single one was sent with a NULL sender. # # >This keeps me from receiving them. RFC compliant or not, # >it is staying the way it is on my server. Go ahead and block me if you # >must. # # I'm not going to block your mail. We just have it set to alert # us (such as # the ORBSSRC test, as you can see in the subject, since you're listed in # there). But, it's kind of like open relays -- they used to be # acceptable, # but no longer are. Same with refusing <>. It causes other postmasters # troubles. # -Scott # # # # # # # # #
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