Merge branch 'master' of git.ispconfig.org:ispconfig/ispconfig3

Till Brehm

2015-05-07 be531cf1d37d2293a572eef25d0190e23fc8a3b4

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amavis unix - - - - 2 smtp
        -o smtp_data_done_timeout=1200
        -o smtp_send_xforward_command=yes