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Hi,
My H4531R returns "Sending has failed! Invalid response code!" when testing SMTP. I am using the ISP's SMTP-server, which does not need authentication.
What could possibly be wrong?
Thanks,
Suntrip
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Hi Suntrip,
This error is shown while SMTP server returned unexpected code. Now just guessing, but I think you have enabled default email sender. Please disable this option and set sender manually.
If you problem will not be solved by this advice, please send email to our technical on info@cometsystem.cz and they will help you.
Jan
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