SUMMARY :Sendmail question - not local host - not a gateway - user unknown

From: Amod Ozarkar <>
Date: Thu Feb 21 2002 - 16:48:24 EST
Thanks Managers,
I got reply from
Thomas J Jones,Scott Sorrentino, Steve Hammond, Al Hopper

Al Hopper suggested to define smarthost in sendmail config file but it was
already there. The problem was the exchange box was not set to allow mails
from sunbox mainly for security reasons.

Amod Ozarkar.

My question was :
Hello Managers,
I have a problem with sendmail. I can send mails from sunbox ffultra within
my network i.e. but cannot send outside addresses such

ffultra communicates with our mailhost which is  Mailhost
accepts address and then replies "not local host, not a gateway ..
user unknown"
Is this firewall issue at mailhost or it can be solved by configuring
sendmail or dns at ffultra and how.
Mailhost is NT mail server. ffultra is sun ultra-1 with solaris 2.6 and
sendmail 8.8

Any help is greatly appreciated. Of course will summarise. I love this list.

Amod Ozarkar.

Communication between ffultra and mailhost
# Connecting to via relay...
220 X1 NT-ESMTP Server (IMail 5.05 238009-1)
>>> EHLO says hello
250-SIZE 0
250 EXPN
>>> MAIL From:<> SIZE=71
250 ok
>>> RCPT To:<>
550 not local host, not a gateway User unknown
>>> RSET
250 ok its reset
/home/amod/dead.letter... Saved message in /home/amod/dead.letter
Closing connection to
>>> QUIT
221 Goodbye
sunmanagers mailing list
Received on Thu Feb 21 15:46:21 2002

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