$ find trunk/ -type f -exec grep -Hin "@zabbix.com" {} \;|grep -v ".svn"
[..]
trunk/src/zabbix_server/server.c:579: "[email protected]",
trunk/src/zabbix_server/server.c:580: "[email protected]",
[..]

These addresses appeared in a recent commit, they probably shouldn't be there.