Blacklisted Telus IP address

[seanF]

Hello

I am having email bounce back from diveshopscuba.com and when I checked with the web site host, Shaw Business, they were able to determine that my IP address is being Blacklisted by all Hostopia Providers. I am sending the email thru my business account hosted at Bluehost but home internet is Telus. Also similar results with the telus email. So, how do we fix this?

Sean

"Diagnostic-Code: smtp; 550 5.7.1 H:IPI [74.220.216.123] Connection originating from an IP address with a poor reputation."

[NFtoBC]

So both your [email protected], and you [email protected] emails receive this error?

[seanF]

Yes, but it isn't consistent. One will bounce back then go through an hour later. As well as of the 3 addresses may bounce one or later bounce all.

[FuzzyLogic]

The recipient's mail server is likely using some form of blacklisting service to filter suspected spam. These blacklists are often updated multiple times a day and can result in the behaviour you are seeing.

It may be possible to get them to add your sending servers to a whitelist. You would need to work with the recipient to get this sorted out.

[Nighthawk]

The IP address you posted, 74.220.216.123, is from BlueHost's IP pool. The issue you are having is with BlueHost and not Telus. You may want to reach out to BlueHost to see if there is anything they can do. 

[seanF]

Interesting, I will touch base with them. I actually didn't check the IP address, just took Shaws word it was from a Telus server. Thanks

[Nighthawk · Accepted solution]

Easiest way to find out who owns an IP is toss it in the search box at the top of https://whois.arin.net/ . It shows which company owns the netblock an IP(v4) address belongs to. The details of the IP you posted are here.