MailAddressValidator.Validate() fails with ServerConnectionError

GemBox.Email
1

Hi, I am attempting to validate an email address using your sample code. The call to MailAddressValidator.Validate() consistently fails after about 2 minutes with result.Status == ServerConnectionError. My code is:

  ComponentInfo.SetLicense("FREE-LIMITED-KEY");
  string email = "this-does-not-exist@nextwavesoftware.com";
  MailAddressValidationResult result = MailAddressValidator.Validate(email);

Thank you for your help!

2

Hi Mike,

I’m afraid I was unable to reproduce your issue.
I get MailAddressValidationStatus.InvalidAddress as a result.

Can you please try again using a different machine and/or a different internet connection? The issue could be related to your local settings (like with your firewall or an ISP provider).

Also, can you create a small Visual Studio project that reproduces your issue and send it to us? We’ll try running it on our end.

Regards,
Mario

3

Thank you for your reply, Mario. Q: Do I need to have port 25 open on the machine that’s running my app?

4

Yes.

The DNS client gets MX records that contain mail server addresses, and the mail address validation will connect to those addresses by always using the same port 25 (TCP).