Hi Experts
I have done the following setting in my dspace.cfg file 

# SMTP mail server authentication username and password (if required)
mail.server.username = ****
mail.server.password =*****
# SMTP mail server alternate port (defaults to 25)
mail.server.port = 587
mail.extraproperties = mail.smtp.port=587, \
                       mail.smtp.host=smtp.office365.com, \
                       mail.smtp.auth=true, \
                       mail.smtp.ssl.trust=*,\
                       mail.smtp.starttls.enable=true, \
                         mail.smtp.ssl.protocols=TLSv1.2,\
                        mail.smtp.ssl.context=TLS

But getting the following the error 

No appropriate protocol (protocol is disabled or cipher suites are 
inappropriate)

Java stacktrace: 
javax.net.ssl.SSLHandshakeException: No appropriate protocol (protocol is 
disabled or cipher suites are inappropriate)
at sun.security.ssl.HandshakeContext.<init>(HandshakeContext.java:171)
at 
sun.security.ssl.ClientHandshakeContext.<init>(ClientHandshakeContext.java:103)
at sun.security.ssl.TransportContext.kickstart(TransportContext.java:220)
at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:433)
at sun.security.ssl.SSLSocketImpl.ensureNegotiated(SSLSocketImpl.java:818)
at sun.security.ssl.SSLSocketImpl.access$200(SSLSocketImpl.java:73)
at 
sun.security.ssl.SSLSocketImpl$AppOutputStream.write(SSLSocketImpl.java:1180)
at com.sun.mail.util.TraceOutputStream.write(TraceOutputStream.java:101)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at com.sun.mail.smtp.SMTPTransport.sendCommand(SMTPTransport.java:1418)
at com.sun.mail.smtp.SMTPTransport.sendCommand(SMTPTransport.java:1408)
at com.sun.mail.smtp.SMTPTransport.ehlo(SMTPTransport.java:847)
at com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:384)
at javax.mail.Service.connect(Service.java:297)
at javax.mail.Service.connect(Service.java:156)
at javax.mail.Service.connect(Service.java:105)

regards
Ghazi anwer

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