Why is outlook.com blocking a Bell SMTP server address for email?

tuxking2000
Contributor III

Tried to send email to an address at outlook.com using smtp.bellnet.ca as my relay and received:

The server responded with "550" - "550 5.7.1 Unfortunately, messages from [204.101.250.106] weren't sent. Please contact your Internet service provider since part of their network is on our block list (S3140). You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors. [Name=Protocol Filter Agent][AGT=PFA][MxId=11B9A3946664379E] [BL02EPF0002992B.namprd02.prod.outlook.com 2024-09-18T00:21:18.891Z 08DCD1CA3BE2EFC7]\r\n"

204.101.250.106 is part of the domain's spf record and my domain's as well since we send out via this SMTP server.  what is going on?  Thanks for any help about this.

 

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Accepted Solutions

I think Bell would have to fix this. You likely would have to talk to someone at Bell business services to get this resolved.

I am a Community All-Star and customer. I'm here to help by sharing my knowledge and experience. My views on Bell and the Community Forum are my own and not the views of Bell or any of its affiliates.

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Vanadiel
Community All-Star
Community All-Star

You might want to look here. 

I am a Community All-Star and customer. I'm here to help by sharing my knowledge and experience. My views on Bell and the Community Forum are my own and not the views of Bell or any of its affiliates.

Thank you Vanadiel, that explains it, but how does this get fixed?  Over time the IP address reputation will go back up and get removed?  And MAYBE outlook.com will allow messages from this relay again?

I think Bell would have to fix this. You likely would have to talk to someone at Bell business services to get this resolved.

I am a Community All-Star and customer. I'm here to help by sharing my knowledge and experience. My views on Bell and the Community Forum are my own and not the views of Bell or any of its affiliates.