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https://bugzilla.mozilla.org/show_bug.cgi?id=238595
Q. What operating system are you using? ***Microsoft XP Professional with SP 1 installed. Q. At what point of the account setup process do you receive the "Please enter a valid hostname" message? ***It occurs when I try to click "next" on the "server information" dialogue box, no matter what I enter into the "incoming server" textbox. Q.
https://mxtoolbox.com/problem/smtp/smtp-valid-hostname
More Information About Smtp Valid Hostname. Your Reverse DNS Record (PTR) is not a valid host name. According to email sending best practices, a PTR Record should be a valid host name. If the PTR Record is not a valid hostname, there is a likelihood that you will experience email delivery issues with anti-spam services.
https://www.noip.com/support/knowledgebase/what-is-a-valid-hostname/
Mar 05, 2020 · What is a Valid Hostname? No-IP Free hostnames must be no longer than 19 characters in length. They can contain the letters a-z, numbers 0-9 and special character – (dash).
https://serverfault.com/questions/711600/reverse-dns-is-not-a-valid-hostname-error-from-mxtoolbox
I'm not sure about outright invalid but it's at least highly unconventional to have a bare domain name as the (fqdn) hostname for a host.. Normally one has a hostname, eg zeus and a domain name eg example.com forming a fqdn hostname zeus.example.com.. Other than strange choice of name, it looks like the reverse DNS is set up properly (properly forward-confirmed).
https://bugzilla.mozilla.org/show_bug.cgi?id=616878
For bugs in Mozilla's modular networking library (aka "Netlib" or "Necko".) The networking library supplies the software interface that Mozilla uses to access physical transports (e.g. the Internet and local drives), perform URL resolutions, and handle a variety of networking protocols.
https://whatismyipaddress.com/hostname
What is a Computer Hostname? A name is a label that is used to distinguish one thing from another. A person's name, for instance, comprises a set of alphabetic characters that allows a person to be individually addressed.
https://serverfault.com/questions/713426/reverse-dns-is-not-a-valid-hostname
Well, before @Halfgaar answered my previous questions, I overlooked that SPF is used for validating whether a server is allowed to send mail for domain.com, not the reported FQDN. I originally assumed the server would have to report domain.com to send mail for domain.com.As I recently realized, I could use v=spf1 mx -all as the SPF record to allow the other machine to send mail.
https://stackoverflow.com/questions/1033330/how-to-validate-hostname-may-be-ip-and-port-number-cstring
I have an dialog for HTTP proxy configuration with hostname and port edit boxes. My question is how can I validate user input for correct hostname and port? May be I have to use some regular expression for hostname validation or there is some helpful MFC or WinAPI function? What is the maximum correct number for port?
https://www.unix.com/shell-programming-and-scripting/266435-check-valid-hostnames.html
Hello, I am trying to develop a script to check for valid hostnames. Below are the prerequisites for a valid hostname which I got from wiki : Hostnames are composed of series of labels concatenated with dots, as are all domain names. For example, "en.wikipedia.org" is a hostname. Each label must be between 1 and 63 characters long, and the entire hostname (including the delimiting dots but not ...
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