Re: [cobalt-users] Qube 2 - SMTP Relay

[Malcolm McLeary <mmcleary@xxxxxxx>]

on 22/2/03 9:58 AM, Malcolm McLeary wrote:

> I don't understand why sendmail needs to do DNS Lookups when deciding
> whether to accept a message from a client ... the lists of domains/addresses
> for "receive" and "relay" are effectively hardwired so I'd expect that DNS
> Lookups are only necessary when actually relaying the message.
> 
> Is there a way to disable this checking?

I've come across a possible "work around" ...

If I change the Email Delivery Frequency from "Immediate" to "15 Minutes"
the server accepts the message from the client without any delay (or time
out waiting for a DNS response).  Obviously this change causes sendmail to
not check that the recipients domain exists at the time of receipt from the
client.

I'm still baffled why it bothers to check at all when the relay rules are
satisfied.

I'd like immediate delivery as I see no point for imposing a delay, but it
seems to work.

Cheers,  Malcolm