Gmail sometimes requires you to log in through a browser, how to overcome it?

Question

Google

There is a domain, there is mail for it through Google Apps. After sending a couple of dozen messages, SMTP falls off with the error "Please log in with your web browser and then try again".

Can you get rid of this?

Answer 1

This means that spam protection is activated. It doesn't work out of nowhere. Most likely, you send out a script and the "behavior" of the script is not quite correct - perhaps the letters are formed in violation of the standards, perhaps the content of the letters is too similar to spam. Perhaps the mailing is too dirty, a lot of NDR is generated. Either way, please review.