Centos 7 and Centos 6.6 minimal install -postfix + sendmail + virtualmin prereq + virtualmin. After installation removing postifix and change to sendmail.
Systems is populated with hundreds of local users which reads mail from IMAPS and POP3S, MailDir format is used from stock Centos 7 installation.
Installing virtualmin and following the wizard, changing read user mail from postfix to sendmail. Adding one virtualmin domain gives this result:
* ?/bin/test "$EXITCODE" = "73"
* ?/bin/test "$VIRTUALMIN" != ""
Result, all local unix users "lost their mail" because mail is delivered to mbox format now.
Checking one user ll /var/spool/mail . .
-rw------- 1 fretom fretom 1650 Nov 30 17:05 fretom . .
Not delivered to Maildir as far I can see, same for all other local unix users.
How do I now get this working ? What format is actually used for virtualmin users ?