Troubleshooting ISP Blocked Email
What do I do if my ISP is blocking Tennessee Conference email?
Answer: If you believe your ISP or mail server is blocking messages from The Tennessee Conference electronic newsletters, we suggest you contact your ISP directly. The following letter will help you communicate with your ISP and hopefully resolve the problem. Our Listserv and e-newsletters are handled by Constant Contact. You may want to try contacting the ISP yourself by customizing the letter below. (This has happened to many Bellsouth.net customers)
Important Note: When you copy and paste this letter into an email, please be sure to replace the XXX placeholder with more specific and appropriate information before sending it to either the contact or ISP.
Copy and Paste this letter into an email to your ISP customer service address
Letter to send to your ISP.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
To: ISP Customer Support
Subject: Remove Constant Contact Block
Hello. My name is XXXX and I have been a customer of your services since XXXX. I understand that you employ filters and/or blacklists to protect customers like myself from unsolicited email; however, this has made it impossible for me to receive newsletters, announcements, and promotions that I have requested. I value these communications and would like to receive them using this email address.
The sender of these emails uses an email marketing service called Constant Contact. Constant Contact is not an open relay and has strict anti-spam policies in place. Because your filters block emails from Constant Contact I am unable to receive these important communications I have signed up for.
I ask that you please help me determine why these emails are being blocked. For further information about Constant Contact or to request more information from them such as log files, the Ops team can be reached at - 781.472.8103 or
Mail from Constant Contact can be found with the following characteristics:
"Envelope from:" domains:
@in.constantcontact.com
@in.confirmedcc.com
Sending IP’s
Beginning in March of 2008 Constant Contact will start to migrate all outbound mail IP’s to one consolidated block. This may take over a year to complete and IP’s will be removed from the list below once they are defunct. All future mail from Constant Contact will be sent from:
- 208.75.123.130 ccm22.constantcontact.com
- 208.75.123.131 ccm23.constantcontact.com
- 208.75.123.132 ccm24.constantcontact.com
- 208.75.123.133 ccm25.constantcontact.com
- 208.75.123.225 ccm29.constantcontact.com
- 208.75.123.226 ccm30.constantcontact.com
- 208.75.123.227 ccm31.constantcontact.com
- 208.75.123.228 ccm32.constantcontact.com
CIDR: 208.75.123.0/24
Network/Netmask: 208.75.123.0 / 255.255.255.0
Legacy IP addresses still sending these emails:
- 63.251.135.74 ccm01.constantcontact.com
- 63.251.135.75 ccm00.constantcontact.com
- 63.251.135.98 ccm06.constantcontact.com
- 63.251.135.103 ccm07.constantcontact.com
- 63.251.135.109 ccm08.constantcontact.com
- 63.251.135.115 ccm09.constantcontact.com
- 64.95.77.162 c1.confirmedcc.com
- 64.95.77.163 c2.confirmedcc.com
- 64.95.77.164 c3.confirmedcc.com
- 66.151.184.35 ccm02.constantcontact.com
- 66.151.184.37 ccm04.constantcontact.com
- 66.151.234.151 ccm14.constantcontact.com
- 66.151.234.152 ccm15.constantcontact.com
- 66.151.234.153 ccm16.constantcontact.com
- 66.151.234.154 ccm17.constantcontact.com
Please contact me when this problem has been resolved.
Sincerely,
XXXXXX