Nope. 
Supposedly, their mail servers were capped at 20Mb attachments too, but somehow it still managed to eff-up both mailservers for the better part of a day.
But we got it all sorted out. "Hey... uh, that's what we have our FTP server for..."
Yea, we had a PR person send out a 20 meg attachment to 1400 users. As separate files, instead of linked to one of the file servers. That was bad. Followed by the inevitable forwarding and whatnot? Not good. Had a word with her, followed by a blank stare and added "But it's a good thing that the information got to the users!". I just gave up and talked to her boss. Before anyone asks, yes, we designed Exchange to not allow that... Except for a handful of folks due to management's dictated exemption. We offered education and/or training to said users. Most did not want it.
You can do the same thing in multiple ways. One cripples the Exchange environment for a day, the other we'd not even notice.
So the next time, at her boss's direction, she forwarded us a HUGE video file and asked us to put it in a format that was under 5 megs. No explanation. So we put it in some random mobile device video format, and sent it back. She sends THAT out to all the users, who can't play it. Her boss goes ballistic on us, until we show him the original email. He was still annoyed, because "we should have known better", but tried to have a talk with her again.
