Re: FOX, read this please

From: desj@ccr-p.ida.org (David desJardins)

Date: Fri, 15 Jan 1993 19:08:44 +0000

Greg Lindahl <gl8f@fermi.clas.Virginia.EDU> writes:
> This is well-known by most folks but it bears repeating: there are
> many, many hosts on the Internet which you can send email to but
> cannot ping or telnet. Always send email to test email.

You can also use nslookup if you care, to find out whether a particular
mailhost exists and how mail is relayed to them.  You need to set the
query type to MX as in the following.  I don't see any particular reason
why you would want to do this except curiosity, though.

David desJardins

% nslookup
Default Server:  cs.Princeton.EDU
Address:  128.112.152.7

> ccr-p.ida.org
Server:  cs.Princeton.EDU
Address:  128.112.152.7

*** No address information is available for ccr-p.ida.org
> set type=MX
> ccr-p.ida.org
Server:  cs.Princeton.EDU
Address:  128.112.152.7

ccr-p.ida.org   preference = 10, mail exchanger = relay1.uu.net
ccr-p.ida.org   preference = 10, mail exchanger = relay2.uu.net
relay1.uu.net   inet address = 192.48.96.5
relay1.uu.net   inet address = 153.39.2.5
relay2.uu.net   inet address = 192.48.96.7
relay2.uu.net   inet address = 153.39.2.7

References

Re: FOX, read this please
gl8f@fermi.clas.Virginia.EDU (Greg Lindahl)
Thu, 14 Jan 1993 22:22:51 +0000
FOX, read this please
chrysop@serifos.csd.uch.gr (Chrysopoulos Marios 484)
Thu, 14 Jan 1993 18:09:18 +0000