Strange email formatting

I’ve been seeing a problem with SquirrelMail where the “reply to” address (and sometimes the “to” address) is formatted strangely. For instance, if my email is, the “reply to” value goes out as:

“username” <>

This doesn’t happen all the time, just here and there, mainly when the outgoing volume of emails is higher.

The “to” field sometimes also get this treatment, or even more weirdly, if i’m sending to "" I get this on the outgoing email:


I don’t have anything set in my personal options or anything. Has anybody encountered this issue?