5 minutes would hardily be noticed. Discussions I was having with others involved delays of an hour or two.
I do not see how "greylisting" a message for 5 minutes would help except when fighting harvesting or dictionary type spam attacks. John T eServices For You > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of William Van Hefner > Sent: Saturday, October 15, 2005 12:22 AM > To: sniffer@SortMonster.com > Subject: RE: [sniffer] Large amounts of spam still getting through > > John, > > I have no clue what the "legal implications" would be, as long as both my > customers know that I'm using it and the sender is notified appropriately > via SMTP. I use greylisting via IMGate/Postfix and it works like a charm. It > takes a good couple of weeks to build up decent whitelist (both manual > whitelisting and automated whitelisting are recommended), but after that it > is pretty much smooth sailing. I've yet to have a single complaint from my > users over greylisting, other than the fact that it delayed their e-mails by > around 5 minutes for the first couple of weeks. If I had planned it better, > even those delays would largely not have occurred. > > I know of no way to implement greylisting on a Windows box. See > greylisting.org for more info. > > > William Van Hefner > Network Administrator > > Vantek Communications, Inc. > 555 H Street, Ste. C > Eureka, CA 95501 > 707.476.0833 ph > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of John T (Lists) > > Sent: Friday, October 14, 2005 12:55 PM > > To: sniffer@SortMonster.com > > Subject: RE: [sniffer] Large amounts of spam still getting through > > > > > > There has been a good amount of discussion about temporarily > > "grey listing" an e-mail message and there are many questions > > surrounding it, one of which is legal. > > > > John T > > eServices For You > > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] > > > [mailto:[EMAIL PROTECTED] > > On > > > Behalf Of Mike Nice > > > Sent: Friday, October 14, 2005 12:43 PM > > > To: sniffer@SortMonster.com > > > Subject: Re: [sniffer] Large amounts of spam still getting through > > > > > > > getting much better at what they do. When a spammer uses > > Geocities > > links, > > > > hijacks real accounts on major providers to send spam through, and > > changes > > > > their techniques every few hours, it makes it difficult > > for Sniffer > > > > to proactively block them, and the delay between rulebase updates > > > > means a delay in catching things that have been tagged. > > > > > > This brings to mind a technique with optional adaptive delay - > > > enabled > > by > > > the user. Each mail is assigned a 'triplicate': (To_Email, > > From_Email, > > > and domain_of_sending_server). Previously unknown triplicates are > > > held for a period of time before being examined for spam. > > The delay > > > is long enough that SpamCop, Sniffer, and InvURIBL mailtraps see > > > copies of the spam and update the blacklists. > > > > > > This would be hard to do with the stock IMail, but > > possibly could > > > be > > done > > > by Declude with the V3 architecture and a database. > > > > > > It still doesn't provide a good answer to the problem of > > spammers > > > hijacking a computer and sending spam through legitimate servers. > > > > > > > > > This E-Mail came from the Message Sniffer mailing list. For > > > information > > and > > > (un)subscription instructions go to > > > http://www.sortmonster.com/MessageSniffer/Help/Help.html > > > > > > This E-Mail came from the Message Sniffer mailing list. For > > information and (un)subscription instructions go to > > http://www.sortmonster.com/MessageSniffer/Help/Help.html > > > > > This E-Mail came from the Message Sniffer mailing list. For information and > (un)subscription instructions go to > http://www.sortmonster.com/MessageSniffer/Help/Help.html This E-Mail came from the Message Sniffer mailing list. For information and (un)subscription instructions go to http://www.sortmonster.com/MessageSniffer/Help/Help.html
