Antje,
> we are testing a firewall setup at the moment and see the strange behaviour that
> connections from inside to an outside mailserver take about 30 seconds to
> initiate while the connection to port 25 of an outside proxy machine that
> forwards the requests to the outside mailserver is fast.
> That's why we assume it's not a problem of the firewall but that qmail handles
> the connections differently. But I don't see a reason for this.
> Any clues?
I had a similar problem sometime ago. It was related to the firewall not
allowing ident requests to pass. They didn't even had to be answered,
they just had to pass the firewall.
As I wrote this it really looked strange but to allow ident request to
pass my fierwall was all I did and my delay problem got solved.
I hope this helps,
Rodrigo
