License Server - Couldn't set the SMTP Server Name

I liked to set the name of our company SMTP Server. But I get the error message: "SMTP server name is invalid". I think it's because the License Server don't like my underscore in it's servername. Is this correct? An underscore should be of course a valid character, right?

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Although Windows allows underscores in computer names, mainly for backwards compatibility, it's not officially supported. RFC952 from October 1985 states:

A "name" (Net, Host, Gateway, or Domain name) is a text string up to 24 characters drawn from the alphabet (A-Z), digits (0-9), minus sign (-), and period (.).
Note that periods are only allowed when they serve to delimit components of "domain style names".

RFC1123 (October 1989) changed the definition to allow host names to start with a digit, but did not remove the restriction on underscores.

Google has plenty of other results if you still need convincing.

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Thank you for your reply. I didn't notice this fact.

But that does not help me. In our company we have thousands of hostnames in our DNS and a lot of them are with underscores. This is maybe the consequence of a not very strict naming policy. It's not an option to change the name of all. And i'm also not responsible for DNS.

So, I now understand why the input Valdierung prevents the input of underscores. But must the Validation be that strict? In a real world scenario there are a lot of hostnames with underscores (Not only in our case).

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Hello
     I've passed your question to License Server developers and they should contact you soon. Thank you!

Andrey Serebryansky

Software Developer

JetBrains, Inc

http://www.jetbrains.com

"Develop with pleasure!"

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