[SM-PLUGINS] retrieveuserdata does not retrieve correct username with vpopmail

[Norbert S. <goo...@gm...>]

Squirrelmail is fully configure and working, I'm just having a small
issue.  I'm running the retrieve user data to get the username from
vpopmail using vuserinfo.

the command is located at "/var/vpopmail/bin/vuserinfo" and is set
correctly inside of "squirrelmail/plugins/retrieveuserdata/config.php"

The problem arises when i compose the e-mail.  IT composes fine, and
sends out great, but on the recipient sees this as the FROM: field:

Error: unable to setuid

I double checked the vpopmail.php file, and it looks ok, but i did not
venture to trace the rest of the code - it's a small issue, and i
don't have much time for code digging this week, so i'm hoping
somebody has ran across this issue before.  Thanks for all your help
guys.