Suddenly Can't Send Outgoing Mail (SMTP)

Suddenly I can't send mail anymore from my phone mail app.

I have Zoho OneAuth MFA set up and an app specific password set up. It has been working correctly for a while.

Has something changed with your servers or setup for SMTP?

No settings have changed on my end. It is not a email/password problem as I can log in on the website with the same user/pass combination.

My SMTP account settings are set up as per the "Admin Console / Mail Settings / Tools & Configurations / Configurations" settings are displayed there.

Thanks.

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