Connection refused 111 Can't open SMTP stream

If you are getting following error while sending email from SquirrelMail then just restart Ip tables or stop and start IPtabls. That will fix the issue

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Connection refused 111 Can't open SMTP stream
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Command to restart Iptables

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/etc/init.d/iptables restart
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Commands to stop and start IPtables
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/etc/init.d/iptables stop
/etc/init.d/iptables start
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