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Unable to send emails

About 3 days ago, out of the blue, I can no longer send messages in Outlook 2016 (Office 365 app), get the following message:

Task '*** Email address is removed for privacy *** - Sending' reported error (0x800CCC6F) : 'Your outgoing (SMTP) email server has reported an internal error. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).  The server responded: 554 impout009.msg.chrl.nc.charter.net cmsmtp 47.135.12.89 blocked. Please see https://www.spectrum.net/support/internet/understanding-email-error-codes for more information. AUP#Out-1130'

Spectrum webmail works fine. I just spent over 2 hours with an online MS support rep and was still unable to resolve the problem. Any help or guidance anyone can supply would be most appreciated!

“***Post moved by the moderator to the appropriate forum category.***”

Outlook 2016 is not part of Office 365

In any Office component >File > More > Account > About shows Version, Build and channel.

Control Panel (view by large icons) > Mail Applet (outlook) > in the resulting window > Email Accounts > Email Tab, if that mail account is shown select > Change > Test Account settings.

Start off with an Office repair

Restart the PC, once fully loaded, repair Office,> Apps & Features>Select Office your version>Modify /Repair, once the repair completes re-test

Contributor since 2006
Currently win11 Pro & O365 Bus, multiple devices

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Thanks for the reply!

I did the Online Repair (from Control Panel) yesterday and still could not send. This morning Send is now working again as mysteriously as it disappeared in the first place. When I opened Outlook this morning the messages that were "stuck" in my Outbox had been sent overnight. I don't know the 'hows' or 'whys' but it looks like I am back in business. Fingers crossed that it stays that way.

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Last updated April 28, 2024 Views 386 Applies to: