File share with email error

Please help us by providing the following info. Before posting please also check the pinned "Known issues" threads and make sure that you're running the latest available version for your oC release: https://owncloud.org/changelog/

Steps to reproduce
1. select file to share
2. type in email
3. error getting Sharing 2014-05-14 21.27.40.jpg failed, could not find ZHIYUAN@HOTMAIL.COM, maybe the server is currently unreachable.

Expected behaviour
it should ask for expiry date and password and will send file as email to recipient

Actual behaviour
getting error on the top
Sharing 2014-05-14 21.27.40.jpg failed, could not find ZHIYUAN@HOTMAIL.COM, maybe the server is currently unreachable.

Server configuration
Operating system: ubuntu 14.04 LTS
Web server:Apache2
Database:My SQL
PHP version: 5.6
ownCloud version (see ownCloud admin page): 10
Updated from an older ownCloud or fresh install: from 9
Special configuration (external storage, external authentication, reverse proxy, server-side-encryption):
N/A

ownCloud configuration

Go to the admin page, click on 'admin' -> 'Generate Config Report' -> 'Download ownCloud config report' or use the command line `sudo -u www-data php occ config:list system` (please sanitize sensitive data):

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php/20151012/redis.so' - /usr/lib/php/20151012/redis.so: undefined symbol: igbinary_serialize in Unknown on line 0
Could not open input file: occ

ownCloud log (data/owncloud.log)

Please paste possible errors in the following code block, see https://central.owncloud.org/t/how-to-find-webserver-or-oc-logfile-enable-php-logfile/808 for more info

29T15:43:11+00:00","remoteAddr":"10.1.80.10","user":"leezy","app":"PHP","method":"POST","url":"\/index.php\/settings\/admin\/mailtest","message":"stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages:\nerror:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed at \/var\/www\/owncloud\/lib\/composer\/swiftmailer\/swiftmailer\/lib\/classes\/Swift\/Transport\/StreamBuffer.php#94"}
{"reqId":"RYGQVchWV2Q8oNtxrwvW","level":3,"time":"2017-04-29T15:44:01+00:00","remoteAddr":"10.1.80.10","user":"leezy","app":"no app in context","method":"POST","url":"\/ocs\/v2.php\/apps\/files_sharing\/api\/v1\/shares?format=json","message":"Failed to notify remote server of federated share, removing share (Sharing AD UAT.xlsx failed, could not find zhiyuan@hotmail.com, maybe the server is currently unreachable.)"}
{"reqId":"pD534ersLpPWKwKzcb0P","level":4,"time":"2017-04-29T15:45:01+00:00","remoteAddr":"","user":"--","app":"cron","method":"--","url":"--","message":"Call to undefined function OC\\App\\simplexml_load_file()"}
{"reqId":"pD534ersLpPWKwKzcb0P","level":3,"time":"2017-04-29T15:45:01+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"knnYIdZDE9eTuZyssDk3","level":3,"time":"2017-04-29T15:46:16+00:00","remoteAddr":"10.1.80.10","user":"leezy","app":"no app in context","method":"POST","url":"\/ocs\/v2.php\/apps\/files_sharing\/api\/v1\/shares?format=json","message":"Failed to notify remote server of federated share, removing share (Sharing 2014-05-14 21.27.40.jpg failed, could not find zhiyuan82@gmail.com, maybe the server is currently unreachable.)"}
{"reqId":"I050dw9vnUzf6tOqdUCG","level":3,"time":"2017-04-29T15:47:02+00:00","remoteAddr":"10.1.80.10","user":"leezy","app":"no app in context","method":"POST","url":"\/ocs\/v2.php\/apps\/files_sharing\/api\/v1\/shares?format=json","message":"Failed to notify remote server of federated share, removing share (Sharing 2014-05-14 21.27.40.jpg failed, could not find zhiyuan82@gmail.com, maybe the server is currently unreachable.)"}
{"reqId":"XUfDS7V8mRCiq7Vs8pRk","level":3,"time":"2017-04-29T15:48:48+00:00","remoteAddr":"10.1.80.10","user":"leezy","app":"no app in context","method":"POST","url":"\/ocs\/v2.php\/apps\/files_sharing\/api\/v1\/shares?format=json","message":"Failed to notify remote server of federated share, removing share (Sharing AD UAT.xlsx failed, could not find zhiyuan@hotmail.com, maybe the server is currently unreachable.)"}
{"reqId":"mSjfouu2fc1uEYKSEZCD","level":3,"time":"2017-04-29T15:48:53+00:00","remoteAddr":"10.1.80.10","user":"leezy","app":"no app in context","method":"POST","url":"\/ocs\/v2.php\/apps\/files_sharing\/api\/v1\/shares?format=json","message":"Failed to notify remote server of federated share, removing share (Sharing AD UAT.xlsx failed, could not find zhiyuan@hotmail.com, maybe the server is currently unreachable.)"}
{"reqId":"QPzCLaCgMoQjMZEEZozC","level":4,"time":"2017-04-29T16:00:01+00:00","remoteAddr":"","user":"--","app":"cron","method":"--","url":"--","message":"Call to undefined function OC\\App\\simplexml_load_file()"}
{"reqId":"QPzCLaCgMoQjMZEEZozC","level":3,"time":"2017-04-29T16:00:01+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"FMQK7tkeqr70gCbB0LqP","level":4,"time":"2017-04-29T16:15:01+00:00","remoteAddr":"","user":"--","app":"cron","method":"--","url":"--","message":"Call to undefined function OC\\App\\simplexml_load_file()"}
{"reqId":"FMQK7tkeqr70gCbB0LqP","level":3,"time":"2017-04-29T16:15:01+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"eMYxCaebG9hlA1y6YkQE","level":4,"time":"2017-04-29T16:30:01+00:00","remoteAddr":"","user":"--","app":"cron","method":"--","url":"--","message":"Call to undefined function OC\\App\\simplexml_load_file()"}
{"reqId":"eMYxCaebG9hlA1y6YkQE","level":3,"time":"2017-04-29T16:30:01+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"uT93sJLEHdJCYuTv0jOt","level":4,"time":"2017-04-29T16:45:01+00:00","remoteAddr":"","user":"--","app":"cron","method":"--","url":"--","message":"Call to undefined function OC\\App\\simplexml_load_file()"}
{"reqId":"uT93sJLEHdJCYuTv0jOt","level":3,"time":"2017-04-29T16:45:01+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"Dgvk4y3riNWXSyznIVtl","level":4,"time":"2017-04-29T17:00:01+00:00","remoteAddr":"","user":"--","app":"cron","method":"--","url":"--","message":"Call to undefined function OC\\App\\simplexml_load_file()"}
{"reqId":"Dgvk4y3riNWXSyznIVtl","level":3,"time":"2017-04-29T17:00:01+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"drbKJ3UpNcKuiDwFTpXP","level":4,"time":"2017-04-29T17:15:01+00:00","remoteAddr":"","user":"--","app":"cron","method":"--","url":"--","message":"Call to undefined function OC\\App\\simplexml_load_file()"}
{"reqId":"drbKJ3UpNcKuiDwFTpXP","level":3,"time":"2017-04-29T17:15:01+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"U7Wg0WRYupH39F6pPvHS","level":3,"time":"2017-04-29T17:22:29+00:00","remoteAddr":"10.1.80.10","user":"leezy","app":"no app in context","method":"POST","url":"\/ocs\/v2.php\/apps\/files_sharing\/api\/v1\/shares?format=json","message":"Failed to notify remote server of federated share, removing share (Sharing 2014-05-14 21.27.40.jpg failed, could not find ZHIYUAN@HOTMAIL.COM, maybe the server is currently unreachable.)"}
{"reqId":"pr3jDaG8bz5WweoT4OJs","level":3,"time":"2017-04-29T17:22:51+00:00","remoteAddr":"10.1.80.10","user":"leezy","app":"no app in context","method":"POST","url":"\/ocs\/v2.php\/apps\/files_sharing\/api\/v1\/shares?format=json","message":"Failed to notify remote server of federated share, removing share (Sharing 2014-05-14 21.27.40.jpg failed, could not find ZHIYUAN@HOTMAIL.COM\/OWNCLOUD, maybe the server is currently unreachable.)"}
{"reqId":"4qo6SdkEClHUVx8KAjI5","level":3,"time":"2017-04-29T17:23:02+00:00","remoteAddr":"10.1.80.10","user":"leezy","app":"no app in context","method":"POST","url":"\/ocs\/v2.php\/apps\/files_sharing\/api\/v1\/shares?format=json","message":"Failed to notify remote server of federated share, removing share (Sharing 2014-05-14 21.27.40.jpg failed, could not find ZHIYUAN@HOTMAIL.COM\/OWNCLOUD, maybe the server is currently unreachable.)"}
{"reqId":"DgzU4uDHiRdo3w56Jfan","level":4,"time":"2017-04-29T17:30:01+00:00","remoteAddr":"","user":"--","app":"cron","method":"--","url":"--","message":"Call to undefined function OC\\App\\simplexml_load_file()"}
{"reqId":"DgzU4uDHiRdo3w56Jfan","level":3,"time":"2017-04-29T17:30:01+00:00","remoteAddr":"","user":"--","app":"PHP","method":"--","url":"--","message":"You are using a fallback implementation of the intl extension. Installing the native one is highly recommended instead. at \/var\/www\/owncloud\/lib\/composer\/patchwork\/utf8\/src\/Patchwork\/Utf8\/Bootup\/intl.php#18"}
{"reqId":"AkyBfq4uHiz2BDgBUsRn","level":3,"time":"2017-04-29T17:31:10+00:00","remoteAddr":"10.1.80.10","user":"leezy","app":"no app in context","method":"POST","url":"\/ocs\/v2.php\/apps\/files_sharing\/api\/v1\/shares?format=json","message":"Failed to notify remote server of federated share, removing share (Sharing 2014-05-14 21.27.40.jpg failed, could not find ZHIYUAN@HOTMAIL.COM, maybe the server is currently unreachable.)"}

Integrity status for oC9+

Login as admin user into your ownCloud and access
http://example.com/index.php/settings/integrity/failed
paste the results here.
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