I have been a Shaw cable customer for over 35 years. Rece...

[JES4]

I have been a Shaw cable customer for over 35 years. Recently we moved to a neighborhood that Shaw does not service so we discontinued our Shaw Cable service. Since I had Shaw Internet for so many years we did not want to notify all of our contacts that I had a new email address.

I joined my Daughter's Shaw email service (3rd party) with Shaw's Authorization. I am now using Clear Wave  Broadband Communications for ISP. When I try to send emails from my Shaw account I get the message that Cloud Filter could not authenticate my IP address.

I contacted my ISP and requested they do a rDNS. They replied that since I have a residential internet service there is no domain attached to my IP address and a rDNS would show nothing. He suggested I try alternate ports for the Shaw outgoing server. I tried 587 and 465 with no success. I checked my IP address with DNSlystics and it shows "no PTR record".

Is there anything else I can try? Of course, their pat answer is to  use Webmail. 

[rstra]

@JES4 

mail.shaw.ca, port 587, use ssl and password authentication. That works for me and I send through Telus, Can Com, Bell and Verizon in the US.

What are your settings?

[JES4]

Settings match except the only encryption options are None, SSL/TLS, STARTTLS or AUTO. I'm using Outlook 2016.

[rrutherford1]

Enter your IP address into this web site,  https://dnslytics.com/ , and hit enter.  A report should show up with the PTR record.  IF there is no PTR record, Cloudfare should work to configure their internet architecture to provide a PTR record or, work with their underlying Internet bandwidth("transit") provider to have one configured for the IP range Cloudfare is using.  You may need to send Cloudfare a copy of the report and escalate to their 2nd/3rd level technical support.  Shaw is rejecting the mail because it cannot validate the the IP address to prevent IP spoofing.. 

Using Shaw webmail logs you on to a Shaw webmail server on their network.  Using the mail client on your PC while on a non-Shaw network uses a 3rd party IP address(not Shaw) to end messages to the Shaw mail servers which is why Shaw is checking for a valid IP address.

[JES4]

As per my original post, I have done the dnslytics  check and of course it  shows "no  PTR record".  It does show the net range for Clearwave broadband communications. (my ISP).

It is obvious that Cloudfilter is blocking my outgoing mail because it cannot validate my IP address.

Since Shaw .ca has contracted Cloudfilter to block suspected spam, it is Shaw's responsibility to work with this contractor and/or my ISP to include accepting my IP address. That is, if they have any interest in customer support.

[rrutherford1]

Should be a simple fix for your ISP or for their underlying Internet Transit/IP provider to fix their IP configuration.

Good luck...