2010/2/11 Jonathan Tripathy <jon...@abpni.co.uk>: > Hi Folks, > > Does anyone know how to make a backup MX server query the primary mx server > if a mailbox exsists, before accept the contents of the mail? > > I have a problem with MAILER-DAEMON messages...
for example using address verification: http://www.postfix.org/ADDRESS_VERIFICATION_README.html .. or keeping list of valid users on that machine.. -- Eero