🚀 go-pugleaf

I am trying to send e-mail to a student group in the (former) Soviet Union.
The address I have is of the form

	user@host.locality.su

Unfortunately using this form caused the message to
end up at Sydney University, and be flung back with an "unknown host/domain"
message.

The Postmaster at my site has tried the form

	user%host.locality.su.@munnari
                             ^
                             Note extra dot



This attempt didn't get any "undeliverable" message back; unfortunately it
got nothing back.

A couple of questions:

What is the most reliable way of addressing such mail (without having to
muck around with MX records and other arcane things)? I.e. what should I 
put in the To: header?

My guess is: user%host.locality.su@X

             where X is a site outside Australia which is more likely to 
             think that su means Soviet Union than Sydney University.

             What is a good choice for X?

Thanks in advance,


-- 
John Machin
c/o Jacques Martin Industry
100 Drummond St, Carlton, Victoria 3053, Australia
Phone: +61-3-667-9714 Fax: +61-3-667-9433 ACSNet: sjm@cocam.oz.au

" ... there is no finite line of demarcation which limits the powers
of the Analytical Engine" -- Ada Augusta, Countess of Lovelace