Milter-greylist

On Mon, 8 Feb 2016, Johann Klasek johann@... [milter-greylist] wrote:

> On Sun, Feb 07, 2016 at 10:23:51PM -0600, Bob Friesenhahn bfriesen@... [milter-greylist] wrote:
>> The site http://mxtoolbox.com/ claims that my inbound mail is
>> particularly slow.  The specific test page is at
>> http://mxtoolbox.com/domain/www.simplesystems.org/.  The claim is that
>> it takes 8.5 seconds to deliver a mail to my domain and results are
>> consistent.
> [..]
>>
>> Is this test page faulty or is there something in my mail delivery
>> chain (e.g. milter-greylist) which is adding time?
>
> Maybe this is the cause:
> Sendmail has usually IDENT queries enabled which timeouts in 10 or 15 secs
> (if the TCP connection back to clients port 113 does not lead to an
> immediate connection refused).
>
> I have following line included in my .mc config:
>
> define(`confTO_IDENT',`0s')dnl
>
> which prevents your server to do any IDENT queries.

Thanks for the heads-up.  Hardly anyone runs IDENT servers any more.
However, local telnet produces a quick response.

I have a local caching DNS BIND server here which should make 
short-work of any repeated queries.

Bob
-- 
Bob Friesenhahn
bfriesen@..., http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/