The results of your email command are provided below. Attached is your
original message.

- Results:
    Ignoring non-text/plain MIME parts

- Unprocessed:
    Your message could not be delivered because the destination server was
    not reachable within the allowed queue period. The amount of time
    a message is queued before it is returned depends on local configura-
    tion parameters.
    Most likely there is a network problem that prevented delivery, but
    it is also possible that the computer is turned off, or does not
    have a mail system running right now.
    Your message was not delivered within 4 days:
    Host 93.147.21.10 is not responding.
    The following recipients did not receive this message:
    <curl-and-php-request_at_cool.haxx.se>
    Please reply to postmaster_at_cool.haxx.se
    if you feel this message to be in error.

- Done.

attached mail follows:

This message was undeliverable due to the following reason:

Your message could not be delivered because the destination server was
not reachable within the allowed queue period. The amount of time
a message is queued before it is returned depends on local configura-
tion parameters.

Most likely there is a network problem that prevented delivery, but
it is also possible that the computer is turned off, or does not
have a mail system running right now.

Your message was not delivered within 4 days:
Host 93.147.21.10 is not responding.

The following recipients did not receive this message:
<curl-and-php-request_at_cool.haxx.se>

Please reply to postmaster_at_cool.haxx.se
if you feel this message to be in error.