Oh it is, but it's entirely optional
. If the motd_text.txt functioned properly it wouldn't be needed at all. I run a few servers that demand the MOTD to be functional, as it serves to inform users as to both the specifics of the server and the rules of the community.
I've found that those with their motds disabled not only cause far more issues for my administrators (due to them not being able to read our rules), but they also pester the players with far too many questions that are answered on the welcome panel. Thus bringing me to write this, although it was done in ~15 minutes so I'm sure it could be written better; it at least serves its purpose