Updated postmaster_address and hostname setting descriptions.
Updated postmaster_address and hostname setting descriptions.

Distrotech/dovecot,Distrotech/dovecot,damoxc/dovecot,Distrotech/dovecot,damoxc/dovecot,damoxc/dovecot,Distrotech/dovecot,damoxc/dovecot,damoxc/dovecot,Distrotech/dovecot