Alert for Shaw email - E-mail spam bounce back messages & Unable to Login

Document created by [shaw]ali on Jan 22, 2015Last modified by shaw-jamesp on Mar 6, 2017
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If you're unable to access your Shaw email, please review these helpful steps below.


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E-mail spam and bounce back messages

Unable to login to Shaw Webmail and receive the following error

E-mail security best practices



E-mail spam and bounce back messages


We have received reports from some customers that their Shaw email inbox is receiving bounce back messages from e-mail spam messages that they haven't sent. If you are experiencing this issue - please update your email password immediately.


For updating your email password, please visit and sign-in to your Shaw Account. Once signed-in: Click on Internet > Scroll down to Email > Choose Edit display name next to your email address and enter a new password and then confirm it > then click Update Email button below.


For email password requirements and security tips, please see our article here: Email Password Requirements. Please also review the "E-mail security best practices" listed below.

If changing the e-mail password, still does not give you access back in to the account and upon login you are receiving the following error messages:
"HTTP Error 400" or "Login failed. Please try again. Invalid credentials.", please see the next step below.


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Unable to login to Shaw Webmail and receive the following error:


"HTTP ERROR 400 Problem accessing /service/preauth. Reason: authentication failed for [ ______]"


"Login failed. Please try again. Invalid credentials."


If you have reset your password and still cannot access your email, your account may have been flagged for sending spam emails, you will need to contact Shaw Technical Support to have your email account unlocked - please call 1-888-472-2222 or chat with a live rep here:




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E-mail security best practices


For best practice email security tips - please see our updated article here:


If your account was flagged for sending spam emails, be sure to verify your account preferences are correct after your email account has been unlocked. Spammers have been known to modify the email preferences from


Go to and login, then click "Preferences" on the top right corner and check the following settings are correct:

  • Email filters (Preferences > Mail > Filters)
  • Reply to (Preferences > Mail > Accounts > From: Display Name and Reply-to: Display Name: & Email Address)
  • Email Signatures (Preferences > Mail > Signatures)
  • Email forwarding (Preferences > Mail > Receive > When a message arrives: Forward a copy to)




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Related Articles

Email Password Requirements



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