Re: Warning host name does not resolve

2016-07-17 Thread @lbutlr
On Jul 14, 2016, at 6:50 PM, Noel Jones wrote: > Aside from Wietse's joke about speeding up the remote DNS, just > ignore these. The actual load incurred on your system is > essentially nil, especially when they're blocked in postscreen. Thanks. I wasn’t so much worried about load, but about the

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