Re: Weird HELO's

[Matti Aarnio <mea@utu.fi>]

I have been a bit busy elsewere, a lot backlog email in queue..

> On Fri, 17 Feb 1995, James MacKinnon wrote:
> > On Fri, 17 Feb 1995, Tom Samplonius wrote:
> > >   The guy answering postmaster mail claims that it is my problem because 
> > > my system is giving the error.  Sigh...
> > > 
> > >   It only appears to affect some mail from that site....I think it my be 
> > > a mailing list/alias?
> > 
> > can you set up zmailer to run AUTH (IDENT)? , i.e.:
> 
>   Sorry, I built Zmailer without auth.  I didn't think I'd need it :(.  I 
> was also concerned about it's affects on Eudora clients over SLIP 
> links.... any comments on that?

	No trouble, though it may slow them down a bit.  (Like couple
	seconds..)  Some other systems/sites may have trouble, if the
	routers/gateways decide that IDENT queries are Security Breaches
	and cut the connection, THEN there are not very many ways to
	live with AUTH...
	A working answer to IDENT query on a router is to drop such
	packets to the floor.  Most (all?) users ident libraries use
	few seconds timeouts, and ZMailer reports failed ident as
	"UNKNOWN@hostname.."  (Failed for any reason..)

	If the SMTPOPTIONS= does not have "-a", the AUTH does not become
	used, even if compiled in.

>   I doubt that it is a security breakin though, because 
> postmaster@xmission basically admitted that there mailer does do the above.
> 
> Tom

	/Matti Aarnio	<mea@utu.fi>