And if I-Mail cannot verify the user is valid on the sender's domain, what exactly do you think the Verify MAIL FROM Address does in 8.x Antispam?
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Gerry Massat Sent: Friday, October 24, 2003 5:03 PM To: [EMAIL PROTECTED] Subject: Re: [IMail Forum] Imail discard vs. bounce From: "Ed McAndrew" <[EMAIL PROTECTED]> > This isn't about spam, this is about unknown users, which can't be > filtered until there is knowledge of whether or not the user exists, > which means it has to touch the imail server for user account reference. IMail can't do it, but IMGate can. With Sender Address Verification, IMGate does a temporary reject on delivery from an unknown sender. For example if my server gets an email from [EMAIL PROTECTED] it checks with the MX for example.com to see if the bozo exists. Then when the message is re-delivered IMGate will accept delivery if bozo is valid, and refuse delivery if it's bogus. So if the sender doesn't exist- it ain't legit! > Sure, some spam is routed, but that is not the source of the problem, > the problem is just general misdirected mail sent by tens of thousands > of sender's world wide...... > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Len Conrad > Sent: Friday, October 24, 2003 4:19 PM > To: [EMAIL PROTECTED] > Subject: Re: [IMail Forum] Imail discard vs. bounce > > > >oes anybody know of a way this can be done?. > > The best way "system wide" is not to let the crap get down the wires and > > into the mailbox server in the first place, by rejecting (not bounce) at > an > anti-spam MX gateway. > > You should never accept and then bounce what you reject (you become part > of > the problem, not part of the solution). > > I don't "silently discard" on IMGate, other than episodes such as a > mailer > worm storm. > > Rejecting mail after RCPT TO: is highly effective and accurate, plus > most > efficient for your systems, and all of Internet. > > And don't buy any BS and FUD about "high reject rates of legit mail" > when > doing envelope-rejection. > > Len To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
