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Editorial Team
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Asked: 2026-06-15T02:57:52+00:00

I just had my server upgraded from Centos 4.9 to Centos 6.2 The following

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I just had my server upgraded from Centos 4.9 to Centos 6.2

The following line is getting logged to my /etc/httpd/logs/error_log (no timestamp, but it gets logged at least every few seconds) :

sendmail: Not running with correct effective GID.  Is sendmail binary setgid mailtrap?

Any idea what it might be or how I could stop this error to get logged ?

All I could think of was doing the following… and long and behold, I get the same error:

root@vps1 [/]# whereis sendmail
sendmail: /usr/sbin/sendmail /usr/lib/sendmail
root@vps1 [/]# /usr/lib/sendmail stop
sendmail: Not running with correct effective GID.  Is sendmail binary setgid mailtrap?
sendmail: Not running with correct effective GID.  Is sendmail binary setgid mailtrap?
root@vps1 [/]# /usr/lib/sendmail restart
sendmail: Not running with correct effective GID.  Is sendmail binary setgid mailtrap?
sendmail: Not running with correct effective GID.  Is sendmail binary setgid mailtrap?
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1 Answer

  1. Editorial Team

    This fixed it for me:

    chown root:mailtrap /usr/sbin/sendmail
chmod 2755 /usr/sbin/sendmail
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