Shaw Cable SMTP not working

Shaw Cable SMTP not working

Shaw cable. They are one of our ISP’s that provide cable internet access. I have used them for about 10 years and they are pretty good, BUT they seem to have a problem with updating customers and letting them know when changes have been made to their system, which is the case I was faced with yesterday when I could not send any private domain mail from my desktop mail client, being Office Outlook. I also tried using Mozilla Thunderbird with the same issue. An error was returning that an internal server error had occurred. Now, for this error, when I write private domains, they are domains I own that I have set up a pop email account for. This did not however affect my shaw email account. So to clarify. me@paintcalgary.com was not sending, where me@shaw.ca was. So I suspected initially, Ensim on my server was misbehaving. First thing I did was restart the bind and ensim services on the server, which didn’t correct the problem, then I tried updating the server software, still, no fix. Finally, I tried setting SMTP to a different port because Shaw uses port 110 for receiving mail, blocking port 25. So what I did is add port 26 to my SMTP configeration on the server, and change my SMTP settings in Outlook to the same port and ran a test email. It worked! Therefore, effective March 16, 2011, Shaw Cable is no longer allowing SMTP connections for private domains on port 25. Unless you are a system admin, familar with adding ports for SMTP, open a support ticket with your host and explain that your ISP...

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