On Thursday 08 December 2011 13:04:13 Peter L. Berghold wrote: > Is there are "best practice" concerning the ordering of the > directives to the right hand side of the "=" for > smtpd_recipient_restrictions?
Consider the relative costs of the restrictions. For example, a hash: table access(5) lookup will have very little cost, whereas a reject_rbl_client restriction incurs the delay and bandwidth of a DNS lookup. Furthermore, be aware of the potential problem of 'permit' results allowing open relay: http://www.postfix.org/SMTPD_ACCESS_README.html#danger > The reason I'm asking is I added a set of lines for RBL reverse DNS > and they don't seem to be having any effect. The "real" question lacks adequate information to answer. See: http://www.postfix.org/DEBUG_README.html#mail -- Offlist mail to this address is discarded unless "/dev/rob0" or "not-spam" is in Subject: header
