[Unit] 
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Description=Postfix Mail Transport Agent 
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After=syslog.target network.target 
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Conflicts=sendmail.service exim.service 
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[Service] 
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Type=forking 
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PIDFile=@LOCALSTATEDIR@/spool/postfix/pid/master.pid 
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ExecStartPre=-@SBINDIR@/check_hostname.sh 
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ExecStartPre=-@LIBEXECDIR@/postfix/aliasesdb 
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ExecStart=@SBINDIR@/postfix start 
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ExecReload=@SBINDIR@/postfix reload 
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ExecStop=@SBINDIR@/postfix stop 
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[Install] 
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WantedBy=multi-user.target 
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