Quoting Christian Schmitz via curl-library <curl-library@cool.haxx.se>:
* Connected to myprovider.com (123.45.123.45) port 465 (#0)
### long time nothing seems to happen
* response reading failed
That is the port number for SSL and you are talking plain text.
You may want to enable SSL, e.g. with smtps:// URL.
Ouch! Thanks!
Yes, I had smtp*s* on other URLs, but not on that one.
Now it works as expected.
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