[Mailman-Users] permission denied error on sending mails to mailing list

[dylan lim]

Hi all,

I have set up Postfix+Mailman+htdig on a box and upon sending mails to the
mailing list I have encountered an error of

fatal: execvp /usr/local/mailman/mail/mailman: Permission denied

in my maillog. On my email client, I received a notification that
/usr/local/mailman/mail/mailman post has failed with an error of 1. Can
anyone point me in the right direction? Thank you.