Hi,
Port 587 is smtp with START_TLS.
The connexion start in clear (un encrypted) and upon smtp protocol negotiation
the connexion will be switched to secured/SSL/TLS.
This feature was added in 4D IC v13.2.
There is no way port 587 will work with older versions of 4D.
You can try explicit SSL/TSL on port 465 with
SMTP_Send( ... ;1)
Having said that, you are facing a problem of an old tool with outdated
security protocols and it could be that the ssl/tls version in 4D IC v11 are
not compatible with current smtp servers (or rejected because considered
outdated/unsafe).
HTH
Bruno
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