Looking up SMTP logs with related traffic used to work for us, but since build 6970 I think it's broken. It now returns a lot of unrelated lines.
Only a guess but it might be related to this fix in 6970:
Fixed: Searching logs for Related Traffic on servers with non-US date/time formatting returns no results.
ps: we are using non-US date/time formatting and it was working well until now, so I don't understand the fix.
To have a hint if it can be related. Are you @Tim DeMeza and @Rod Strumbel using the same date/time formattiing ?
ps: i've opened a ticket about it
Sébastien Riccio
System & Network Admin
https://swisscenter.com