help: mutt doesn't want to send email to ip addresses

[Peter Jay Salzman <p@dirac.org>]

hi all,

mutt doesn't want to deliver mail to addresses which use an ip address.

in other words, my system is dirac.org at address 64.164.47.8.  i can send
email to p@dirac.org, but any email to p@64.164.47.8 gets bounced as
"unrouteable mail domain".

i'm pretty sure that pine was able to deliver to addresses like
p@64.164.47.8.  perhaps it's just a .muttrc thing.

can someone please help me?  i'd really like to be able to send email to
addresses like p@64.164.47.8.

(when replying to spam, often all i have is an ip address.  i'd rather not
take the time to use nslookup to get a host/domain name from an ip address).

thanks!

pete