Sendmail auth/ident checking issue

Question

Hi All,
I have a problem sending mail to a host which seems to have sendmail configured to use Ident port (113) to check back on the mail sender. The host is Sol 9 and sendmail version is 8.13.8+Sun/8.12.9.
My problem is that this port is not enabled on the firewalls between sender and receiver so the ident checking and hence the mail is failing and I need to turn this checking off.
I modified sendmail.cf to include an ident timeout "O Timeout.ident=0s" which I believe is supposed to eliminate this checking yet firewall logs indicate it is still happening.
I can telnet the server on port 25 and have dialogue with the mail server and even supposedly leave a mail though when I try to check it on the host it says there is none.
Any advice on how to get the mail through - particularly any more sendmail.cf settings - would be greatly appreciated.
cheers,

Answer 1

Well, um, no.
tcp_auth is never the first channel a message hits. It's only switched there after authentication happens.
It sould like you're more interested in what the "from" is than if the user authenticates, right?
Your messages will be hitting tcp_local first, then possibly switching to tcp_intranet, or tcp_auth
Likely, the easiest way to do what you want is through somthing in mappings, or through a sieve filter.