[webmin-l] usermin sent mail

[Caleb F. <cal...@gm...>]

Hi,

I'm using Webmin 1.300 and Usermin 1.190, and I'm having problems 
getting Usermin to save sent mail to the correct location. I keep 
getting this message:

[error]
Sending mail to som...@so... ..

Failed to send mail : Failed to lock file /path/to/my/Maildir/sentmail 
after 5 minutes


Of course, I'm using a valid email address, and the message is received 
by the recipient. So my question is where can I change the configuration 
to save the message to ~/Maildir/.Sent?

BTW I'm using Postfix and Dovecot.

Thanks,
Caleb