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Whitelisting Sending IPs

If subscribers at a particular company are having problems receiving email from your Campaigns, it could be due to blocking by their mailserver. The IT Department at that company should be engaged to help resolve that issue, which may include whitelisting the IPs used for sending your campaigns.
 
If the issue with blocking is with mail sent to your corporate email address or that of one of your partners, forward the IPs used for sending your Campaigns to that IT Department.  Those IPs are necessary for the investigation and eventual resolution of the issue.
 

Dedicated VMTA IPs

Your company may have been assigned dedicated IPs used for sending.  Contact the WhatCounts Support team to determine if you have dedicated VMTAs and the corresponding IPs.
 

Shared VMTA IPs

Following is the list of shared IPs used across the WhatCounts platform for a variety of tasks.  Because shared IPs can change, whitelisting by IP is only recommended as a last resort.  Any changes to shared IP addresses will be posted on this page.
 

IP

VTMA Domain

74.203.57.45

wcadmin1.wc09.net

74.203.49.181

common1.wc09.net

74.203.49.182

common2.wc09.net

74.203.49.183

common3.wc09.net

74.203.49.184

common4.wc09.net

74.203.49.185

common5.wc09.net

74.203.49.51

common6.wc09.net

74.203.49.187

common7.wc09.net

74.203.49.188

common8.wc09.net

74.203.49.189

common9.wc09.net

74.203.49.190

common10.wc09.net

 
Page last updated: May 4, 2020
 
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