I'm rejecting at my mail server, we're rejecting at the black list level something over 560,000 messages per day.
Invalid names run at about 2000 per day. Bounce backs from mail servers rejecting mail we DIDN'T send runs at around 1500 a day. -----Original Message----- From: Richard Ashley [mailto:[EMAIL PROTECTED] Sent: Thursday, August 31, 2006 12:04 PM To: [email protected] Subject: RE: [gb-users] E-mail proxy question Your results are very close to mine. For our domain, approx 90% of incoming emails are "directory harvesting" spam (spam to nonexistent users), and are rejected by our filtering software. -----Original Message----- From: Mason Landrum [mailto:[EMAIL PROTECTED] Sent: Thursday, August 31, 2006 11:54 AM To: [email protected] Subject: RE: [gb-users] E-mail proxy question Hi All, Since I implemented the suggestion by David (listed below) I am now seeing over 90% of our mail rejected. The rejections should be rejected because they are addressed to users we don't have in our organization. I'm just amazed at the amount of junk mail we are receiving. My questions is, is 90% what the rest of you are also seeing, or do me have a problem somewhere that I need to look into. Sincerely, Mason Landrum -----Original Message----- From: David Brooks [mailto:[EMAIL PROTECTED] Sent: Thursday, August 24, 2006 10:28 AM To: [email protected] Subject: Re: [gb-users] E-mail proxy question Hi, You can create an Object of type Mail Sentinel (v4.0) that contains all email address in your organization. Then in the Policy you can reference the new object as the destination of the email. In effect you only accept email for the listed users. You may need some admin type emails such [EMAIL PROTECTED], [EMAIL PROTECTED] David At 10:17 AM 8/24/2006, Martin Hepworth wrote: >Mason Landrum wrote: >>Everyone, >>We are receiving a tremendous amount of junk e-mail and undeliverable >>messages for e-mails we have not sent. Most of these are addressed to >>individuals that do not exist within our organization. My questions >>is, is there a way to deny these e-mails at the Gnatbox proxy level >>before they get to the e-mail server. Right now my e-mail proxy is >>limited to only allowing the correct domain name to be accepted. Can I >>tighten this down to specific e-mail addresses like >>[EMAIL PROTECTED] Thank you in advance for your help. >>Sincerely, >>Mason Landrum >>______________________________________________________________________ >>This email has been scanned by the MessageLabs Email Security System. >>For more information please visit http://www.messagelabs.com/email >>______________________________________________________________________ >>------------------------------------------------------ >>To unsubscribe: [EMAIL PROTECTED] >>For additional commands: [EMAIL PROTECTED] >>Archive: http://archives.gnatbox.com/gb-users/ > >I do this at the MTA level. With sendmail you'll have to purchase >(small cost) milter-ahead or with other MTA's you can do it for free. > >EG with exim its a simple ACL to lookup AD/LDAP or a file of valid >addresses and reject non-existent ones.. > >-- >Martin Hepworth >Senior Systems Administrator >Solid State Logic >Tel: +44 (0)1865 842300 > >********************************************************************** > >This email and any files transmitted with it are confidential and >intended solely for the use of the individual or entity to whom they >are addressed. If you have received this email in error please notify >the system manager. > >This footnote confirms that this email message has been swept for the >presence of computer viruses and is believed to be clean. > >********************************************************************** > >------------------------------------------------------ >To unsubscribe: [EMAIL PROTECTED] >For additional commands: [EMAIL PROTECTED] >Archive: http://archives.gnatbox.com/gb-users/ ------------------------------------------------------ To unsubscribe: [EMAIL PROTECTED] For additional commands: [EMAIL PROTECTED] Archive: http://archives.gnatbox.com/gb-users/ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ ------------------------------------------------------ To unsubscribe: [EMAIL PROTECTED] For additional commands: [EMAIL PROTECTED] Archive: http://archives.gnatbox.com/gb-users/ ------------------------------------------------------ To unsubscribe: [EMAIL PROTECTED] For additional commands: [EMAIL PROTECTED] Archive: http://archives.gnatbox.com/gb-users/ ------------------------------------------------------ To unsubscribe: [EMAIL PROTECTED] For additional commands: [EMAIL PROTECTED] Archive: http://archives.gnatbox.com/gb-users/
