Ah, now the truth be told. It is a McCrappy problem. John T
> -----Original Message----- > From: [EMAIL PROTECTED] [mailto:Imail_Forum- > [EMAIL PROTECTED] On Behalf Of Kevin Stanford > Sent: Thursday, October 25, 2007 1:03 PM > To: [email protected] > Subject: RE: [IMail Forum] Backscatter > > Unfortunately I have McAfee's Webshield in front of my server on the same > box. There is no way for me to drop mail destined for invalid recipients > since it just passes through after virus/content filtering. This has caused > a lot of bounce backs from within my server also. I had to put a rule in > place to delete the emails with the bounce so that it is not passed back and > forth. > > I am currently looking into Iron Port and Barracuda Spam Firewall to replace > Webshield. I would certainly think either one of these solutions has the > ability to do what you suggest. > > Thanks... > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Dave Marchette > Sent: Thursday, October 25, 2007 2:45 PM > To: [email protected] > Subject: RE: [IMail Forum] Backscatter > > This implies that you are accepting emails to unknown recipients, and then > processing them, and bouncing if invalid. Instead, what you should do is > drop mail destined for invalid recipients, at the envelope level. > This way, there is never a bounce, just a dropped connection. > > If you have servers in front of Imail(sounds like you do), then make sure > the recipient list is loaded there as well or that the front end mail > gateway is checking back to Imail for valid recipients *before* it tries to > accept mail. > > > > > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Stanford > Sent: Thursday, October 25, 2007 12:00 PM > To: [email protected] > Subject: RE: [IMail Forum] Backscatter > > > I don't understand.... > > My server receives an email to an unknown user on my domain. How can I turn > it off so that my server does not send a notice back, to the spoofed > address, that it is a bad address? > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of John T (lists) > Sent: Thursday, October 25, 2007 1:49 PM > To: [email protected] > Subject: RE: [IMail Forum] Backscatter > > No, if your server rejects it for invalid address, the sending server is the > one that is generating the NDR, not yours. It is the problem of the sending > server that is connecting to yours, that server is either acting as an open > relay or has one (or more) of its users that is compromised. > > John T > > -----Original Message----- > > From: [EMAIL PROTECTED] [mailto:Imail_Forum- > > [EMAIL PROTECTED] On Behalf Of Steve Hyer > > Sent: Thursday, October 25, 2007 11:36 AM > > To: [email protected] > > Subject: Re: [IMail Forum] Backscatter > > > > This refers to someone sending TO an invalid address on my server and > > then the bounces go to the spoofed senders. It is a way to get spam > > to bounce off your server and get delivered. > > > > Doug Traylor wrote: > > > > > Steve Hyer wrote: > > > > Does anyone have a work around to turn off non local NDR's to > > > prevent backscatter in IMAIL? > > > > This would prevent people from spoofing the FROM and then sending > > > > to > > > a known address that > > > > will bounce emails to have the bouncebacks consequently delivered > > > > to > > > the spoofed FROM address. > > > > > > Are you referring to email To someone in your domain that is not a > > > valid user, causing a "local"(?) NDR to go to the spoofed From > address? > > > Or, are you referring to an email To somebody outside of your domain > > > > but spoofed as From somebody in your domain and you are receiving > > > the NDR's? > > > > > > Doug > > > > > > 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/ > > 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/ > 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/ 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/
