Somewhat OT email addresses

[Graeme Nichols]

Hello Folks,

I know this is somewhat OT but I was wondering if it is possible to send 
an email with an address in the following format; username@[IP address]

I have been fiddling around because a person with whom I was writing to 
has suddenly become unknown, possibly because of DNS failure, I'm not 
sure, and the mail is returned undeliverable as the domain is unknown. 
They are having the same problem sending mail to me.

I did a ping on my ISP's SMTP mail server and while there was a 100% 
failure rate on the packets, most probably due to some firewall setting, 
I was given the IP address, in this case, 203.12.160.34

I sent a test email to name at 203.12.160.34 but it bounced with the 
following error;

553 5.3.5 203.12.160.34 config error: mail loops back to me (MX problem?)
554 5.3.5 Local configuration error

Is it possible to do what I am trying and circumvent the DNS?

If SKP can help me I would appreciate it.

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Kind regards,

Graeme.
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Happiness is having a scratch for every itch.
		-- Ogden Nash