Gsuite smtp-relay issue "end of file reached"

[Syonyk (Russell Graves)]

There’s some discussion on the same issue going on over here, though no solutions yet.

Emails have stopped sending - end of file reached

Hi all, and apologies if this is similar to some of the other posts that mention this error. For the last four days all emails have stopped getting sent, and the test email also fails. I have browsed through existing topics that are similar, but in my case nothing (that I am aware of) has changed, and email has stopped working after previously working for months without issue. We are using hosting on Digital Ocean, and are using G Suite SMTP relay configured to relay emails from the droplet’s…

Looks like the timing on your failures roughly matches (mine started about 5 days ago, looks like yours started ticking up a few days prior).