We just had a malfunctioning SMTP server. It was sort of down for some

Now we are missing some notification emails.
We configured the UA to use exactly that mail server (not postfix on the
Would our mails somehow be in queue on the UA server, if so, where?

Or in other words, how does emailing work in userapp?

(A side note here, the mail admin said, that the mail server "might" have
accepted the mails, and eaten them. In that case our mails is ofcourse