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What error message?
(Port 25 via an authenticated SMTP server here is fine)
...I'm not using it at the moment, but should I try it?
I was considering getting another auth SMTP contract with a 3rd party, but it would be likely that it would be blocked by vodafone too.
Sending' reported error (0x800CCC80):'None of the authentication methods supported by this client are supported by your server.'