Re: lists

[Joe <joe@jretrading.com>]

On Wed, 20 Dec 2023 17:14:05 +0100
Marco Moock <mm@dorfdsl.de> wrote:

> Am 20.12.2023 um 15:58:48 Uhr schrieb Joe:
> 
> > For many years my SMTP server has requested an ident (TCP port 113)
> > from outside sending servers. Since nobody now runs ident servers,
> > there will be no reply, and my server waits for a timeout of thirty
> > seconds before continuing.  
> 
> Good admins don't use DROP in firewalls, so either you get a TCP RST
> (because no application listens on that port) or a ICMP
> administratively prohibited, so your server knows that no identd runs
> there and can continue.
> 

I'm not actually looking for an ident reply, I'm looking to hold up the
transaction for thirty seconds to weed out the spambots. This is a
convenient way to do it.

I mentioned it after the practice of ignoring the first SMTP contact
was referred to, to achieve more or less the same thing.

-- 
Joe