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Unable to send emails from Thunderbird. Able to receive but not send out. Shaw is the ISP provider.

  • 1 cavab
  • 1 has this problem
  • 7 views
  • Last reply by sfhowes

graemeegan
graemeegan
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I get this error message when I try to send emails.

Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: shw-obgw-4004a.ext.cloudfilter.net cmsmtp 38.26.17.175 blocked. AUP#DNS.

Thank you! Graeme

I get this error message when I try to send emails. Sending of the message failed. An error occurred while sending mail: Outgoing server (SMTP) error. The server responded: shw-obgw-4004a.ext.cloudfilter.net cmsmtp 38.26.17.175 blocked. AUP#DNS. Thank you! Graeme

All Replies (1)

sfhowes
sfhowes
  • Top 25 Contributor
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Don't have a definite fix, but there's some worthwhile reading here:

https://support.shaw.ca/t5/internet-discussions/shaw-cloudfilter-blocking-ip-when-using-a-3rd-party-isp/td-p/39468

https://support.shaw.ca/t5/internet-discussions/cannot-send-email-via-smtp-appears-to-be-shaw-s-cloudfilter/td-p/45816