I understand what you are saying, and I'm not sure why it works, but it does. If you setup a rule to forward spam (based on X-Headers) to a separate Quarantine mailbox, it will only forward the good emails to the user gmail/yahoo account. I have it setup this way for several clients that use Exchange. A forward is setup for each user that goes to the Exchange server. The Imail rules forward spam to a central quarintine mailbox on Imail. If the email is caught by one of the rules it does not get forwarded to the clients Exchange Server.
Craig Imail 8.15/mxGuard/Sniffer > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Rick Robeson > Sent: Thursday, September 01, 2005 1:54 PM > To: [email protected] > Subject: RE: [sniffer] can auto-forward be disabled when spam > is detected? > > How would that address the fact that imail processes the > auto-forward rule before processing the incoming messages > rules (which is where I trigger x-header sniffer flag)? > > Rick Robeson > getlocalnews.com > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Craig Deal > Sent: Thursday, September 01, 2005 11:43 AM > To: [email protected] > Subject: RE: [sniffer] can auto-forward be disabled when spam > is detected? > > > You can change your rules to forward spam to separate user > quarantine mailbox (not a subfolder or sub-mailbox) that does > not have forwarding setup. You just cannot make the rules > forward (or move)the spam to a sub-mailbox like > [EMAIL PROTECTED] on an account that is forwarded. > > Craig > > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Rick Robeson > > Sent: Thursday, September 01, 2005 1:17 PM > > To: [email protected] > > Subject: RE: [sniffer] can auto-forward be disabled when spam is > > detected? > > > > I think I see the problem, though not a quick solution. > > > > Mxguard merely handles traffic between imail and sniffer and > > calculates its spam score and probability. IT has no override > > capability excepting its own white and black lists blocking calling > > for sniffer processing. > > > > IMail's processing order of activies (as listed in > > http://www.ipswitch.com/support/imail/guide/imailug8.1/Chapter > > %204%20process > > ing2.html#47027 > > ) > > show that forwarding instructions are handled before domain or user > > incoming rule execution. > > > > It is the domain and user incoming rule execution that is the first > > level of being able to pick up sniffer/mxguard instructions (via > > x-header presence/value). Only connection or content > filtering is used > > by imail prior to the forwarding process. I don't see any > way to have > > mxguard or sniffer affect the connection or content filtering rules > > unless they were somehow able to (for example) add a dummy > url to the > > content of the email which would trigger the content filtering url > > blacklist. > > > > Ipswitch probably considers the current forwarding > processing order a > > feature (after all it allows another external mail server > rulebase to > > inject it's rules). Unfortunately, in large quantity, > lumping multiple > > aliases from multiple sites to a one or more users who then want > > auto-forward to another email server for internet mail (i.e. gmail) > > makes it look like my server is generating spam to gmail/yahoo/etc. > > > > Ideas? > > > > > > Rick Robeson > > getlocalnews.com > > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > > > > > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] Behalf Of Pete McNeil > > Sent: Thursday, September 01, 2005 8:44 AM > > To: Rick Robeson > > Subject: Re: [sniffer] can auto-forward be disabled when spam is > > detected? > > > > > > On Thursday, September 1, 2005, 9:12:17 AM, Rick wrote: > > > > RR> I'm using Sniffer with MXGuard, and Ipswitch Imail Server. > > RR> > > RR> For accounts who have auto-forwarding setup to transfer > > mail to a > > RR> remote mail account, I've noticed that they're > transferring all > > RR> mail, including detectable spam. Is there a way to block > > forwarding > > RR> when spam is detected? > > > > That's an mxGuard question. SNF makes no distinctions on where the > > message is going in an IMail environment... My guess is > that mxGuard > > is either not scanning these messages, or that it either can't or > > doesn't take action in those cases. > > > > If I had to guess it's probably most likely that IMail doesn't give > > mxGuard a chance to effect these messages, or that in a similar way > > mxGuard doesn't effect them due to the "split envelope" problem. > > > > Please let me know what you find out. > > > > Thanks, > > > > _M > > > > PS: Split Envelop Problem - When the SMTP envelope of a messages > > indicates multiple recipients, and one of the recipients has rules > > that would dispose of the message in some way there is an inherent > > conflict. It goes against RFCs to deliver the message to > one recipient > > and not the other (though that is probably desirable and > may be/become > > the best > > practice) since that would require "splitting the envelope" > > and the message into two copies with each copy following a > different > > path. > > > > In a strict interpretation of email processing rules the > message must > > be either delivered to all recipients on the envelope or not > > delivered. In many cases the final rule turns out to be: > "If anyone is > > supposed to receive this message then everyone must. Once they have > > received it they can discard it if they wish, but an MTA shouldn't > > make that call since it has essentially 'signed up' to be > responsible > > for delivering the message as is." > > > > > > 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 > 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
