Blocked email

[RandyMarsh]

I cannot send to @shaw.ca accounts from this domain / IP's

refused to talk to me: 554 shw-ibgw-4001a.ext.cloudfilter.net cmsmtp 208.72.177.106 blocked

to shw-central.mx.a.cloudfilter.net <<< 554 shw-ibgw-4002a.ext.cloudfilter.net cmsmtp 208.72.179.132 blocked.

[mdk]

@RandyMarsh -- a DNS-query returns:

Name: spamhero.redwarning.com
Address: 208.72.177.106

So, what is your E-mail configuration?  What DNS-name have you configured for your "outgoing SMTP server" ?

On www.RedWarning.com I see:

redwarning.com is your one stop zone for controlling inbound Emails entering your Corporate or Private network.

I presume that it also can filter "outgoing" E-mail that you try to send through them.

I suggest that you contact RedWarning, and get them to liaise with Rogers/Shaw to remove the "block".

Or, just bypass their SMTP-server, and use "smtp.shaw.ca" as your "outgoing SMTP server".

EDIT: I also checked: https://mxtoolbox.com/SuperTool.aspx?action=blacklist%3a208.72.179.132&run=toolpage

82 of the "black-lists" gave an OK for that IP-address; the 83rd black-list site did not respond.

So, I wonder which black-list is being queried by Rogers/Shaw.  

Note that black-lists can be volatile. Perhaps, that IP-address is not currently listed, although it was, in the near past?

[RandyMarsh · Accepted solution]

The fact is, @shaw and @RogerS do not talk or share any information with each other.    They use a 3rd party "cloudfilter.net" service that is not maintained at all by anybody competent.  This filter service used by @shaw.ca has been left out to dry and nobody at Rogers is looking after it anymore.  Thus the messages are flagged.  Some one in management needs to smack the techs looking after this and update the cloudfilter.net filter. 

[mdk]

@RandyMarsh wrote: The fact is, Shaw and Rogers do not talk or share any information with each other.

Really? In April 2023, Rogers purchased Shaw Communications.

From: https://support.shaw.ca/t5/billing-account-articles/rogers-shaw-coming-together-faq/ta-p/56371

Rogers & Shaw FAQ
Shaw and Rogers are coming together. Learn more about Rogers and Shaw are coming together to continue expanding connectivity, supporting local communities and bringing you the latest 5G and fibre network technology.

Are Shaw and Rogers now one company?
Yes, Shaw and Rogers came together in April 2023.

Over 1.5 years later, they seem to be "sharing" everything.

They use a 3rd party "cloudfilter.net" service that is not maintained at all by anybody competent.

Since 2006, a company named ProofPoint has been operating as CloudFilter.

From: https://www.proofpoint.com/us/products/email-security-and-protection/email-protection

Proofpoint Email Protection is the industry-leading email gateway, which can be deployed as a cloud service or on premises. It catches both known and unknown threats that others miss. Powered by NexusAI, our advanced machine learning technology, Email Protection accurately classifies various types of email. And it detects and blocks threats that don’t involve malicious payload, such as business email compromise (BEC), using our Advanced BEC Defense. You can also automatically tag suspicious email to help raise user awareness. And you can track down any email in seconds. Plus, our granular email filtering controls spam, bulk graymail and other unwanted e-mail ...

So, they seem to be "competent".

This filter service used by @shaw.ca has been left out to dry and nobody at Rogers is looking after it anymore.

This statement is completely false. Shaw "outsourced" all its E-mail filtering to ProofPoint, allowing ProofPoint to "look after it" since then, for all "@shaw.ca" E-mail IDs.

Thus the messages are flagged.

Yes, "spammy" messages are flagged.

Some one in management needs to smack the techs looking after this and update the cloudfilter.net filter. 

The whole point of outsourcing is to NOT have any Rogers Together With Shaw technicians who are devoted to viewing/updating E-mail filtering. There must be somebody working for Rogers at a "management" level who liaises with ProofPoint, to review the performance & cost-effectiveness of CloudFilter.

Contact Rogers Support [1-888-472-2222] if you think that CloudFilter is "wrong". The Rogers Agent will "escalate" your issue to ProofPoint, to investigate the filtering.

It is quite possible that one of the other companies (anywhere on the Internet) has been sending "spam" E-mail, possibly through a compromised account within a company, to "@shaw.ca" IDs.  Thus, the "reputation" of the IP-address of the mail-server CloudFilter has been "tarnished". Thus, some "black-list" company has added that IP-address to its list of "bad" IP-addresses.

Moral: a little knowledge is dangerous.

P.S. I am a volunteer within this forum. I never have been employed by Shaw, probably to their relief. I have never worked for Shaw. I an not authorized to speak for Shaw.