SMTP Settings

We have received a message saying that our SMTP settings have been disabled after 3 unsuccessful attempts.

We are sending email through an office365 account and have not changed anything recently.

When we check the SMTP settings in QF it displays:

Error Message Your SMTP settings are deactivated as there were three consecutive errors . Please correct the settings again and reactivate.
More Details The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.57 SMTP; Client was not authenticated to send anonymous mail during MAIL FROM [CWXP265CA0

Has the certificate on the QF server expired?

Please advise…


Nothing has changed our side. Occasionally mail providers can block communications for various reasons.

There is a similar post here that may help.

Also your emails will still send even if we can’t reach your SMTP service, we will route them through our own mail server.