1. Accepting NUL senders is correct. 2. Accepting NUL senders on legit messages is needed. Example, user sends to someone, but misspells. If you do not accept NUL sender, how will the user get the notice. (Assuming at some point it goes through a S&F or gateway.) 3. Accepting NUL senders can be usefull for the admin, as it can show when a joe job is under way and can show if there is a problem occurring.
John Tolmachoff Engineer/Consultant/Owner eServices For You > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:Declude.JunkMail- > [EMAIL PROTECTED] On Behalf Of Matthew Bramble > Sent: Saturday, January 03, 2004 4:02 PM > To: [EMAIL PROTECTED] > Subject: Re: [Declude.JunkMail] Any thoughts on blocking bounce messages > from spam? spam? spam? > > John, let me correct myself. The MAILFROM does in fact most always end > up being the null sender (RFC compliant I believe). I'll share what I > can find if in fact I can get something to work. I had IMail refuse > null senders for a very long time until late Summer, but then I noticed > that my system didn't handle all of the bounces itself (I knew much less > back then). Now I'm wondering if I should have just left it off :) > > Matt > > > John Tolmachoff (Lists) wrote: > > >Well, I have not seen a full blown joe job yet, but it does need to be > >looked into. My problem, time. There is none. :(( > > > >John Tolmachoff > >Engineer/Consultant/Owner > >eServices For You > > > > > > > > > >>-----Original Message----- > >>From: [EMAIL PROTECTED] [mailto:Declude.JunkMail- > >>[EMAIL PROTECTED] On Behalf Of Matthew Bramble > >>Sent: Saturday, January 03, 2004 3:44 PM > >>To: [EMAIL PROTECTED] > >>Subject: Re: [Declude.JunkMail] Any thoughts on blocking bounce messages > >>from spam? spam? spam? spam? spam? spam? spam? spam? spam? > >> > >>That ain't all of it by far actually. A very common one is also > >>mailer-daemon@, however these are often customized, for instance > >>[EMAIL PROTECTED], or bounce@, postmaster@, etc. To have a complete > >>filter, you would need to figure out the body text that is unique to > >>each of the mail servers and some ISP's as well. > >> > >>Time to start testing. This is problematic because a good filter for > >>this can't FP on legit E-mail, and you can't make use of weighting for > >>it to work if you are going to try to put this stuff in a sub-directory. > >> > >>Matt > >> > >> > >>John Tolmachoff (Lists) wrote: > >> > >> > >> > >>>>I'm surprised that I haven't been hearing more people talking about > this > >>>>issue. > >>>> > >>>> > >>>> > >>>> > >>>I have been seeing it, but have been extremely busy with other stuff. > >>> > >>> > >>Right > >> > >> > >>>now, those are being caught to HOLD with filtering on MAILFROM CONTAINS > >>> > >>> > >><>. > >> > >> > >>>John Tolmachoff > >>>Engineer/Consultant/Owner > >>>eServices For You > >>> > >>> > >>> > > > --- > [This E-mail was scanned for viruses by Declude Virus > (http://www.declude.com)] > > --- > This E-mail came from the Declude.JunkMail mailing list. To > unsubscribe, just send an E-mail to [EMAIL PROTECTED], and > type "unsubscribe Declude.JunkMail". The archives can be found > at http://www.mail-archive.com. --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com.
