When we try to send emails from the platform to members of a course (approximately 950 members) when a certain time has elapsed the process fails and in the ILIAS log we get the following message:
[296d8] [2019-07-25 13: 26: 18.177255] teaching_wsrv.ERROR: ilSoapClient :: call: 1423 Calling webservice failed with message: Could not connect to host
[296d8] [2019-07-25 13: 26: 18.178027] teaching_wsrv.WARNING: ilSoapClient :: init: 1398 Soap init failed with message: SOAP-ERROR: Parsing WSDL: Couldn't load from 'https: // ev. uma.com/webservice/soap/server.php?wsdl ': failed to load external entity "https://ev.uma.com/webservice/soap/server.php?wsdl"
When I try to connect to the URL with the wsdl information it works properly and the xml file can be obtained, although I don't know why it says it can't connect to the host and can't load the WSDL. Can anyone provide help?
ILIAS VERSION: 5.3.16
Platform: Centos 7.6
Apache: 2.4.6-89
PHP: 7.1.30
Thanks.