Package: postfix
Version: 2.5.5-1.1
Severity: grave
The logic in postfix.postinst that attempts to ensure there are
certain entries in the master.cf file will corrupt an existing
master.cf that is not terminated with a newline character. It is
contained in this section of postfix.postinst....
while read line; do
serv=${line%% *}
if ! grep -qE "^${serv}[[:space:]]" ${MASTER}; then
[ -n "$echoed" ] || echo "in master.cf:"; echoed=y
echo " adding missing entry for ${serv} service"
echo "$line" >> ${MASTER}
fi
done << @@EOF@@
flush unix n - - 1000? 0 flush
proxymap unix - - n - - proxymap
trace unix - - - - 0 bounce
verify unix - - - - 1 verify
tlsmgr unix - - - 1000? 1 tlsmgr
anvil unix - - - - 1 anvil
scache unix - - - - 1 scache
discard unix - - - - - discard
retry unix - - - - - error
@@EOF@@
... You can see that when echo appends $line to ${MASTER}, it will
have pasted it on the end of the last line.
In my case that caused my spamfilter injection point to silently fail
causing the mailserver to stop delivering mail.
An easy fix would be to stick a blank line in front of the added line
to ensure it can't be extending an existing line.
--
Jim Studt
[EMAIL PROTECTED]
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