Yes, its an SMTP bounce, not a store, try to forward and return. I should have clarified.
Right. It also quite an effective way to be sure you never hear from non-technical users who don't understand your bounce message, and from people like me who don't feel like jumping through your hoops, particularly in a case like this where we're responding to a question you asked.
Yes, unfortunately there are draw backs, I try to make the 550 bounce as informative as possible, (url link yadayada) but.. With a maillist I see the responses because I allow email from the network that serves the maillist server, in this case NANOG (: So... As needed I add IPs/Netblocks, but like I said very much over kill and administratively burdening. But the upside is (I think maybe 1) spam email in the last 3 months. I still get a count on the spam bounces, which have decreased, month 1=1752 bounces, 2=1292, 3=899. Again not an answer, more like a campaign.. Just my 2¢s on the whole thing. Cheers, -Joe Blanchard On 3:43 pm 04/04/07 John Levine <johnl@iecc.com> wrote:
1) You send bounces from spammers to innocent people, whose addresses have been forged.
This is an SMTP reject, not a bounce. It's a lethal variety of greylisting.
This technique works great to keep spam out of your mailbox.
3) You are dropping valid emails.
Right. It also quite an effective way to be sure you never hear from non-technical users who don't understand your bounce message, and from people like me who don't feel like jumping through your hoops, particularly in a case like this where we're responding to a question you asked.
R's, John