What to do if your mail server or your Internet Service Provider is blocking mail from the St. Lawrence Seaway
As you may know, Constant Contact powers the email communications that the St. Lawrence Seaway sends as a result of your subscription to our free update service. It is possible that your e-mail server or your Internet Service Provider (ISP) may be blocking e-mails transmitted by Constant Contact. If this is the case, please contact your e-mail administrator or your ISP (a sample letter is appended below).
When you receive a response from your administrator or your ISP, please forward the response email to the following address: ops@constantcontact.com. The Ops Department at Constant Contact will follow-up with your administrator / ISP once they receive your email.
Best regards,
St. Lawrence Seaway E-Business Team
Draft Message to Your E-Mail Administrator or ISP
To: Customer Support
Subject: Remove Constant Contact Block
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 the newsletters, announcements, and special notices 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 communications.
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 ops@constantcontact.com.
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:
IP Range: 208.75.123.0 - 208.75.123.255
CIDR: 208.75.123.0/24
Network/Netmask: 208.75.123.0 255.255.255.0
If you would like to know exactly which IP’s in this block are in use, please contact ops@constantcontact.com.
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