We are having issue on CRM system not able to send mails through the configured SMTP server but the network team says the issue is from CRM application side however to come to the correct conclusion,
Used Telnet to test SMTP
1.On the CRM hosted Windows OS system did the telnet check with smtp host and port , it connects also performed following steps I,e setting smtp server , source domain, senders email and recipient email, message subject and body we are able to send and receive email
Please let me know the above steps does it passes through SMTP authentication OR not
2. configured email account in the CRM system with SMTP mail server.port: (SMTP server is smtp.office365.com)
check marked "use SMTP Authentication". provided user name and password the result is not able to send mail following popup from the CRM system
"Error Failed to connect to outbound SMTP Mail Server. The outbound mail server selected for the mail account you are using is invalid check the settings OR select different mail server" BUT when unchecked the "Use SMTP Authentication" that is disabled the SMTP Authentication then able to send mail out..
As mentioned above SL1 when able to send and receive email from telnet does it passed though the authentication , please help.