Very true. Add rate limiting to help combat harvesting and dictionary attacks.
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:bounce- > [EMAIL PROTECTED] On Behalf Of East, Bill > Sent: Thursday, December 20, 2007 8:36 AM > To: Exchange Discussions > Subject: RE: Email philosophy 101 - Spam NDRs > > Good option. Real senders get the notification they need and > misdirectred NDRs don't happen. > > The only problem I see there, from a filtering point of view, is that > it > makes directory harvesting much easier. > [EMAIL PROTECTED] 554 > [EMAIL PROTECTED] 554 > [EMAIL PROTECTED] 354, Please spam the hell out of this valid > address. > > -- > be - MOS > > A company is known by the men it keeps. > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On > > Behalf Of Kennedy, Jim > > Sent: Wednesday, December 19, 2007 4:27 PM > > To: Exchange Discussions > > Subject: RE: Email philosophy 101 - Spam NDRs > > > > > > 3) You should get a spam solution that will do realtime > > recipient checking and 554 them during SMTP. > > > > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] [mailto:bounce- > > > [EMAIL PROTECTED] On Behalf Of East, Bill > > > Sent: Wednesday, December 19, 2007 4:03 PM > > > To: Exchange Discussions > > > Subject: Email philosophy 101 - Spam NDRs > > > > > > Let's say we get 1000 messages with invalid addresses into our spam > > > filter. > > > 950 of them will get caught as spam if we filter them. > > > 49 slip past the filter but shouldn't have. They're directory > > > harvesting messages, invalid return addresses, and valid return > > > addresses of people who didn't send the spam. > > > 1 is a message from one of our customers asking for directions, > that > > he > > > fat-fingered to MemmerService > > > > > > Should we send NDRs on the 49 spammy ones so that the customer gets > > his > > > NDR? Or should we silently drop his message so that we're > > not sending > > > 49 > > > NDRs that we shouldn't? > > > > > > Please use a #2 pencil. > > > > > > > > > _________________________________________________________________ > > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > > Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange > > > To subscribe: > > http://e-newsletters.internet.com/discussionlists.html/ > > > To unsubscribe send a blank email to leave-28404306- > > > [EMAIL PROTECTED] > > > Exchange List admin: [EMAIL PROTECTED] > > > To unsubscribe via postal mail, please contact us at: > > > Jupitermedia Corp. > > > Attn: Discussion List Management > > > 475 Park Avenue South > > > New York, NY 10016 > > > > > > Please include the email address which you have been contacted > with. > > > > > > _________________________________________________________________ > > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > > Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange > > To subscribe: http://e-newsletters.internet.com/discussionlists.html/ > > To unsubscribe send a blank email to > > [EMAIL PROTECTED] > > sparklist.com > > Exchange List admin: [EMAIL PROTECTED] > > To unsubscribe via postal mail, please contact us at: > > Jupitermedia Corp. > > Attn: Discussion List Management > > 475 Park Avenue South > > New York, NY 10016 > > > > Please include the email address which you have been contacted with. > > > > > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange > To subscribe: http://e-newsletters.internet.com/discussionlists.html/ > To unsubscribe send a blank email to leave-28437546- > [EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > To unsubscribe via postal mail, please contact us at: > Jupitermedia Corp. > Attn: Discussion List Management > 475 Park Avenue South > New York, NY 10016 > > Please include the email address which you have been contacted with. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/read/?forum=exchange To subscribe: http://e-newsletters.internet.com/discussionlists.html/ To unsubscribe send a blank email to [EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with.
