I guess this is the reason my client got this email.
****************************************************************** Thank you for contacting Verizon Online Security. After investigation, Verizon Online Security has determined that the request you submitted is not being blocked. Either the IP you submitted was not the sending server or another issue may exist. Also please note: If the error message you or the person trying to contact you receives is not a 550 error that has a link to http://www.verizon.net/whitelist then you have another issue. Please double check the IP address you submitted and if an error is found you can resubmit the request via the webform at http://www.verizon.net/whitelist or [EMAIL PROTECTED] email address for further investigation. Sincerely, Verizon Online Abuse http://www2.verizon.net/policies [EMAIL PROTECTED] ****************************************************************** -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Len Conrad Sent: Thursday, January 11, 2007 10:54 AM To: [email protected] Subject: Re: Re[4]: [IMail Forum] Verizon 450 action not taken > >What newsletters do that? > >I see them all of the time. Some legit send-only list servers use [EMAIL PROTECTED] where: 1. sender@ does not exist (aka no return path), which is RFC illegal. 2. DNS query for MX/A of @label.sender.domain gets an answer, but trying to contact the MX/A times out. The types of legit senders that do this are stock/financial/newsletters (many of which have paid subscriptions), marketing mail shots, etc. 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/
