[Raw Msg Headers][Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: smtpserver aborts

On Mon, 30 Jan 1995, Matti Aarnio wrote:

> 	One case is with BROKEN UCX (?) which considered a case
> 	of not having IDENT service on a VMS as a valid reason to
> 	tear down ALL connections in between the remote server,
> 	and the VMS machine...  One choice o that is not to use "-a"
> 	option on the SMTPOPTIONS -line of the /etc/zmailer.conf ..
> 	(But it won't solve a case when the sender is a well-behaving
> 	 UNIX machine -- unless the sender has a firewall which
> 	 cuts the line, when it gets an IDENT query ?)

Yes indeed, this at least seems to be true in all the problem cases
I have encountered so far:

# telnet inti.pci.on.ca ident
Trying...
telnet: Unable to connect to remote host: Host is unreachable

# telnet dxmint.cern.ch ident
Trying...
telnet: Unable to connect to remote host: Host is unreachable

# telnet fsm-1.pica.army.mil ident
Trying...
telnet: Unable to connect to remote host: Host is unreachable

# telnet MORSE.NORCEN.COM ident
Trying...
telnet: Unable to connect to remote host: Host is unreachable

I'd hate to have to turn off authentication...

Is there a way that smtpserver can use a separate stream for IDENT
which will not tear down the existing smtp connection, and if the
remote host or firewall does not support IDENT, just proceed as
usual? 
Or is the IDENT query fatal enough that the whole connection
gets ripped out by the #alls?

--
James S. MacKinnon             Office: P-139 Avahd-Bhatia Physics Lab
Computing/Networking           Voice : (403) 492-8226
Department of Physics
University of Alberta          email : Jim.MacKinnon@Phys.UAlberta.CA
Edmonton, Canada T6G 2N5             : jmack@Phys.UAlberta.CA