Comment # 4 on bug 818843 from Bernhard Wiedemann

can not reproduce it in 13.2 using this conf

#EnableIPv6: Yes
RunAsDaemon: No
WorkDir: /home/bernhard/mrtg
Interval: 5
Language: english

Target[maila]: `/home/bernhard/mrtg/mrtgmail`
MaxBytes[maila]: 1000000
Title[maila]: Mail statistics
Options[maila]: growright, gauge, nopercent
YLegend[maila]: mails
LegendI[maila]: deferred
LegendO[maila]: sent

and a dummy script:
# cat mrtgmail 
echo 10
echo 100