Then your server has an incorrect configuration. Why are you receiving email for invalid users? Imail does not work that way unless you are using the stupid worthless nobody alias.
John T From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Steve Hyer Sent: Thursday, October 25, 2007 12:00 PM To: [email protected] Subject: Re: [IMail Forum] Backscatter That is not true. The bouncebacks are generated from my server telling the sender that the address is invalid and consequently it forwards back the message being sent. That is the problem here. Most mail systems now have a way to turn off non local NDRs to prevent this, but IMAIL doesn't seem to have that necessary feature now. I need a work around. SJH John T (lists) wrote: 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/
