I just tried to send an e-mail to postfix.org from an account on the Zimbra server. In zimbra.log is a message that says 'Staus:SoftBounce (I turned this on for debuging purposes) Postfix.org:Name or service not found'
I can not ping postfix.org or mail.postfix.org but if I do a 'dig postfix.org mx' it lists an MX & an A record for them.
Any idea what this is about?