Swift_SendmailTransport#1
(
    [Swift_Transport_SendmailTransport:params] => [
        'timeout' => 30
        'blocking' => 1
        'command' => '/usr/sbin/sendmail -t -i'
        'type' => 16
    ]
    [*:buffer] => Swift_Transport_StreamBuffer#2
    (
        [Swift_Transport_StreamBuffer:stream] => null
        [Swift_Transport_StreamBuffer:in] => null
        [Swift_Transport_StreamBuffer:out] => null
        [Swift_Transport_StreamBuffer:params] => []
        [Swift_Transport_StreamBuffer:replacementFactory] => Swift_StreamFilters_StringReplacementFilterFactory#3
        (
            [Swift_StreamFilters_StringReplacementFilterFactory:filters] => []
        )
        [Swift_Transport_StreamBuffer:translations] => []
        [*:sequence] => 0
        [Swift_ByteStream_AbstractFilterableInputStream:filters] => []
        [Swift_ByteStream_AbstractFilterableInputStream:writeBuffer] => ''
        [Swift_ByteStream_AbstractFilterableInputStream:mirrors] => []
    )
    [*:started] => false
    [*:domain] => 'security-units.com'
    [*:eventDispatcher] => Swift_Events_SimpleEventDispatcher#4
    (
        [Swift_Events_SimpleEventDispatcher:eventMap] => [
            'Swift_Events_CommandEvent' => 'Swift_Events_CommandListener'
            'Swift_Events_ResponseEvent' => 'Swift_Events_ResponseListener'
            'Swift_Events_SendEvent' => 'Swift_Events_SendListener'
            'Swift_Events_TransportChangeEvent' => 'Swift_Events_TransportChangeListener'
            'Swift_Events_TransportExceptionEvent' => 'Swift_Events_TransportExceptionListener'
        ]
        [Swift_Events_SimpleEventDispatcher:listeners] => []
        [Swift_Events_SimpleEventDispatcher:bubbleQueue] => []
    )
    [*:sourceIp] => null
)