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Comcast SMTP servers on blacklist

Contributor

Comcast SMTP servers on blacklist

Because I was having issues with using GoDaddy's SMTP servers getting blacklisted from spammers on a shared server, I switched to Comcast's SMTP.  It's be OK until yesterday.  When sending certain emails, they are getting rejected:

 

Diagnostic-Code: smtp; 553 5.3.0 96.114.154.168 Your message was rejected for possible spam/virus content.Please ask your email provider to visit http://emailadmin.registeredsite.com for resolution.

 

 

If I take that IP into MXTOOLBOX, I get these red flags:

 

 LISTED DRMX 96.114.154.168 was listed  Detail 300 547 Ignore
 LISTED LASHBACK 96.114.154.168 was listed  Detail 300 94 Ignore
 LISTED SORBS SPAM 96.114.154.168 was listed  Detail 3600 94 Ignore
Official Employee

Re: Comcast SMTP servers on blacklist

Hello,

 

I apologize for the inconvenience but it seems that one of our hosts was added to a block list preventing the messages to go through. We submitted a ticket with the service provider to remediate this issue.





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