Is DNS MX Record Required For Email?
Scooby at doo.com
Fri Feb 17 03:36:04 UTC 2006
"Mark Andrews" <Mark_Andrews at isc.org> wrote in message
news:dsrand$2sl9$1 at sf1.isc.org...
>> Is it possible to by-pass the DNS lookup for email like it is for HTTP
>> FTP? Is there something about the MX record in DNS that requires a
>> "User at DomainName.com" type address for it to work?
>> Here's why I ask.
>> I have a static, always-on IP address coming into my house. I run Web and
>> FTP servers on my PC. They work fine, and have for a long time. My OS is
>> Windows NT 2000 Professional.
>> When I scan my ports from a remote machine I get what I expect, which is:
>> 21 (FTP): Open
>> 25 (SMTP): Open
>> 80 (WWW): Open
>> 110 (POP3): Open
>> 143 (IMAP): Open
>> I only share data with people I do business with. I prefer to just use my
>> address instead of aliasing it with a domain name. (For these examples
>> use "126.96.36.199", which is of course not my IP. But it's easier to type.)
>> is no DNS entry for "188.8.131.52" anywhere.
>> "http://184.108.40.206" gets into my web server without a problem.
>> "ftp 220.127.116.11" (DOS prompt) gets to my FTP folder without a problem.
>> But..., when I send an email to "User at 18.104.22.168" it fails. I have a mail
>> account with a Windows based ISP and am experimenting sending mail from
>> to "User at 22.214.171.124". It doesn't work.
> Well to send email to a IP address the correct syntax is
Thanks Mark. That's what I needed to know.
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