I looked this up and there was a lot of talk around this. I am using nextcloud-aio Basic settings trying to set up smtp with gmail I get A problem occurred while sending the email. Please revise your settings. (Error: Email could not be sent. Check your mail server log) I looked into these tw…

Can't send mail via mail Setting 2024

Mornsgrans February 27, 2024, 10:17pm 2

Did you allow sending mails by unsecure email-clients in your Gmail-account settings?

Maybe you will find a solution there:

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