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i try to send e-mail but the following error appear :- User unknown

/dead.letter... Saved message in /dead.letter

how i can solve this error ????

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"" local email address? – ooshro Feb 24 '11 at 11:14
yes it is local email – Mohammad AL-Rawabdeh Feb 24 '11 at 11:24
up vote 3 down vote accepted

Well, I found a similar problem on forums, where someone was also receiving the dead.letter issue. Have you configured sendmail? If not, in the configuration file /etc/, the line with DS must be modified and you must specified your mail server. You can add this server in the file /etc/host.

After the modification of your sendmail configuration, you restart the service :

refresh -s sendmail


stopsrc -s sendmail

startsrc -s sendmail -a "-bd"



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Also try sending mail from the command line with logging on (ie: mail -vvv -s Test root < /dev/null ) – Demosthenex Feb 29 '12 at 16:48

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