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Mailx command not working from one sudo ID

Few days back any mail related command ( mailx, mail ,mpack  ) stopped working from one sudo id .
in the logs i get error as dsn=5.6.0, stat=Data format error
but this happens with only one sudo ID-sudo1@my_hostname
another id -sudo2 works fine with any of the mail command

sudo su sudo1
mailx -s "Test mail" someone@example < /tmp/test.file
/home/sudo1/dead.letter... Saved message in /home/sudo1/dead.letter
where from=sudo1@my_hostname
message fails to sent

sudo su sudo2
mailx -s "Test mail" someone@example < /tmp/test.file
where from=sudo2@my_hostname
message successfully sent and received.

Not getting why with one prefix it is sent and other fails ... ?
Avatar of Panagiotis Toumpaniaris
Panagiotis Toumpaniaris
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The mail server is on the same machine? Can you see in the logs (/var/log/mail*) if there are entries concerning this failure?
Avatar of lisha


yes they are on same machine ...
and i only found syslog /var/log

cd /var/log
ls -l mail*
mail*: No such file or directory

ls -l sys*
which mail server are you using? If you are using sendmail then you are right, the logs should be in syslog under the LOG_MAIL facility.
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yes we are using sendmail...
Avatar of Jan Bacher
Perhaps it's not a sudo mailx issue but a sudo permission issue for that file in the tmp directory.
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the file has 777 permission on it ... we thought so initially ... but it did not work
Have you run strace?
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as i said earlier we were able to send the file using another sudo id .. sudo1 is not working but sudo2 is
I read what you said earlier and obviously this is broken otherwise you would have asked for help.  Have you run strace?
Avatar of lisha


nope not able to run it as it gives error
strace mailx
ERROR: unable to open /dev/log

not having permission
but the log last update date was Mar  4  2014
Avatar of lisha


sorry (Jan Springer) if u felt i was rude earlier .... but i am exactly not getting what have happened ... as nothing has changed from our side
grep sudo1 /var/log/maillog*
Avatar of lisha


we have syslog ... since we use sendmail ... not maillog*... i could paste you the content of that if u like ...
Sendmail uses syslog and typically writes to maillog.

What is your OS?  What version?  Does it use selinux?
Avatar of lisha


my OS is sun solaris ... version SunOS 5.10
Try running that command with "truss" instead of "strace"
Avatar of lisha


ran the command with both sudo1 and sudo2 id for mpack
truss mpack ...
but no diff in any thing between the both id...
russ -c mpack
An input file must be specified
mpack version 1.5
usage: mpack [-s subj] [-d file] [-m maxsize] [-c content-type] file address...
       mpack [-s subj] [-d file] [-m maxsize] [-c content-type] -o file file
       mpack [-s subj] [-d file] [-m maxsize] [-c content-type] -n groups file
syscall               seconds   calls  errors
_exit                      .000       1
write                     .000       6
open                     .000       6       1
close                     .000       5
getpid                   .000       1
execve                  .000       1
sigfillset               .000       1
getcontext          .000       1
setustack            .000       1
mmap                 .000      26
munmap            .000       8
getrlimit              .000       1
memcntl             .000       6
sysinfo                .000       1
resolvepath        .000       7
stat64                   .001      18      12
fstat64                  .000       1
                     --------  ------   ----
sys totals:              .003      91     13
usr time:                .004
elapsed:                 .040
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Jan Bacher
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More /etc/syslog.conf to see whether you are dumping mail.* to /dev/null
/var/adm/messages might contain mail related error, refer to syslog.conf

You might have restrictions mailx is a graphical,
echo "To: somerecipient
From: sender
subject: test

This is a test" | /usr/lib/sendmail -oi -fsender_email -t

See what happens
Avatar of lisha


hey .. i tried using truss to check with mpack ...
the only diff that came is ..
/home/suod1 => truss mpack -s "`date '+%m%d%y'` TEST MAIL" -d /tmp/test_mail_msg1.txt -m 6000000 /tmp/test_mail_attach1.csv ""
    Manu(8:40:14 AM):execve("/usr/bin/mpack", 0xFFBFE794, 0xFFBFE7BC)  argc = 9
/home/suod2 => truss mpack -s "`date '+%m%d%y'` TEST MAIL" -d /tmp/test_mail_msg1.txt -m 6000000 /tmp/test_mail_attach1.csv ""
 execve("/usr/bin/mpack", 0xFFBFE794, 0xFFBFE7BC)  argc = 9

Manu is one of the users present in the server .. but does not have the sudo access ...
This is not copy/paste?
Avatar of lisha


yeah ... was a copy paste error ... now i see the first diff comes here..
stat64("/usr/bin/mpack", 0xFFBFE258) = 0
stat64("/usr/SUNWspro/lib//", 0xFFBFD9B8) Err#2 ENOENT
You probably need assistance with someone that's familiar with Solaris.   I'm sorry but the debug does not help me.
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Avatar of lisha


thanks !! the mail was getting blocked as id was blocked... now the id is unblocked... everything seems to be fine ..