Connection timed up when sending emails with GoogleWorkSpace

[FabioPaz]

Hello, there. For several months, I was successfully using google workspaces smtp to send emails.

But, without any change, outgoing emails started to pile up in the "Email Error Logs" with "Connection timed out".

When I keep trying, I get the "504 gateway error "and a crash. Eventually it works, if I keep trying.

Is this a software problem (IPB) or a google problem?

PS: there's no evident erros on mysql/nginx/php-fpm error log files.

Thank you in advance.

Edited July 29, 2021 by FabioPaz