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Find out the protocol and port used to receive emails from your email server.
Default values are given below (for MS Exchange Server):
SMTP - 25 (Only for Sending Emails)
POP3 - 110
IMAP - 143
POP3s - 995 (SSL)
IMAPs - 993 (SSL)
You can verify connectivity by using TELNET command from a command prompt
syntax: telnet email_server_host PORT
e.g. telnet myserver.exchange.com 110
If you succeed with the above command, you can use the same values to configure email endpoint.
for providing consitent help on this forum..
I was able to configure the email exchange server. Earlier the problem was with the firewall. We had more than one firewall layers and one of the firewall out of three was blocking it. so infrastructure team helped us to resolve the issue..