TLS

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externe Dokus

http://tools.ietf.org/html/rfc4346#section-7.4.1.2


You can test tunneled TLS connections to port 465 with:

openssl s_client -connect hostname:465

You can test STARTTLS connections on port 25 or 587 with:

openssl s_client -connect hostname:587 -starttls smtp