Re: Warning host name does not resolve

2016-07-14 Thread Wietse Venema
@lbutlr: > I get a few thousand messages like this every day: > > mail postfix/smtpd[59689]: warning: hostname sa0877.azar-a.net does not = > resolve to address 91.219.236.126 > > And while I assume that these are all just spammers, it looks like the = > connection continues to get processed and

Postscreen white listing based on MX, SPF

2016-07-14 Thread Lefteris Tsintjelis
Is it possible to add points to clients based on valid SPF (-/~all) and/or valid MX records? For example, give points to a client if it is a valid MX, and/or, give points again if listed in SPF with -all, give less points if valid client but SPF is ~all etc.

Re: Postscreen white listing based on MX, SPF

2016-07-14 Thread Noel Jones
On 7/14/2016 9:58 PM, Lefteris Tsintjelis wrote: > Is it possible to add points to clients based on valid SPF (-/~all) and/or > valid MX records? For example, give points to a client if it is a valid MX, > and/or, give points again if listed in SPF with -all, give less points if > valid client b