<?php return array(
    'ERR_CANNOT_ENABLE_TLS'     => 'Cannot enable TLS.',
    'ERR_CANNOT_OPEN_SOCKET'    => 'Cannot open socket: ({:errnum}) {:errstr}',
    'ERR_CANNOT_SET_TIMEOUT'    => 'Cannot set timeout.',
    'ERR_NO_HELO'               => 'Cannot send mail before HELO.',
    'ERR_NO_MAIL'               => 'Cannot issue RCPT TO before MAIL.',
    'ERR_NO_RCPT'               => 'Cannot send data before RCPT TO.',
    'ERR_NO_RESPONSE'           => 'No response from "{:host}:{:port}".',
    'ERR_SECURE_TYPE'           => 'Secure type ":{secure}" not valid; use SSL or TLS.',
    'ERR_SEND_FAILED'           => 'Failed to send the message.',
    'ERR_CONNECTION_TIMEOUT'    => 'Connection to "{:host}:{:port}" timed out.',
    'ERR_UNEXPECTED_RESPONSE'   => 'Unexpected response from "{:host}:{:port}": ({:code}) {:text}',
);