Q & A

Disable for the user $emailadres

/usr/local/vpopmail/bin/vmoduser -p -s -w -i -r $emailadress

And enable it again for $emailadres

/usr/local/vpopmail/bin/vmoduser -x $emailadress

vmoduser: usage: [options] email_addr or domain (for each user in domain)
options: -v ( display the vpopmail version number )
         -n ( don't rebuild the vpasswd.cdb file )
         -q quota ( set quota )
         -c comment (set the comment/gecos field )
         -e encrypted_passwd (set the password field )
         -C clear_text_passwd (set the password field )
the following options are bit flags in the gid int field
         -x ( clear all flags )
         -d ( don't allow user to change password )
         -p ( disable POP access )
         -s ( disable SMTP AUTH access )
         -w ( disable webmail [IMAP from localhost*] access )
            ( * full list of webmail server IPs in vchkpw.c )
         -i ( disable non-webmail IMAP access )
         -b ( bounce all mail )
         -o ( user is not subject to domain limits )
         -r ( disable roaming user/pop-before-smtp )
         -a ( grant qmailadmin administrator privileges )
         -S ( grant system administrator privileges - access all domains )
         -E ( grant expert privileges - edit .qmail files )
         -f ( disable spamassassin)
         -F ( delete spam)
         -m ( disable maildrop)
  [The following flags aren't used directly by vpopmail but are]
  [included for other programs that share the user database.]
         -u ( set no dialup flag )
         -0 ( set V_USER0 flag )
         -1 ( set V_USER1 flag )
         -2 ( set V_USER2 flag )
         -3 ( set V_USER3 flag )