Apparently we were a bit overreaching, the latest app package broke some public page feature, we are fixing it up but had to revoke that last package version
@girish The MX record resolves to an ISPs server (Strato): smtpin.rzone.de But I don't know if this is particular timeout is domain specific or applies to all of strato. I'm worried it might be the former, at least protocol wise at the point of the delay the recipient domain is known and the server could apply domain specific settings for the backoff/delay.
