LWP doesn't return such messages. Either the message isn't from LWP, or I think you're lying about the message. I presume you were actually getting something of the form 

500 Can't connect to $host:$port (Bad hostname '$host')

[download]

If the message you are getting is the form 

500 Can't connect to $host:$port ($error_cause)

[download]

then the error message is originating from the operating system while LWP was attempting to create a connection. If the OS is telling you there's a permission problem, then there's some OS-level security setting preventing you (the web server user) from creating internet connections.

Are you using SELinux? In any case, this isn't a Perl issue.

* — The 500 might be absent depending on how you got the message.

In reply to Re: Bad hostname by ikegami
in thread Bad hostname by alvise

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