what is 101 error code in ms outlook

101 – Cannot open connection in Outlook

SMTP Error 101 : Typically your SMTP server or email program is unable to even start an SMTP session. Typical replies will be “SMTP Error 101, Error opening connection” or “SMTP Error 101, cannot open SMTP stream”.

All SMTP Error 101 errors usually point to a configuration problem, such as an incorrectly spelt SMTP server, or an IP address that does not exist, or an SMTP port that does not exist or which the recipient will not accept SMTP connections on, or some other process is already using the default SMTP port, port 25.

Read More...