e2xbegqsdyt21hfc wrote:
--- On Thu, 4/9/09, Shachar Shemesh wrote:
e2xbegqsdyt21hfc wrote:
Why the use of some...@[an_explicit_ip_address] is
strongly discouraged?
a. Where did you get the idea it was strongly discouraged?
Quoting RFC 822:
Note: THE USE OF DOMAIN-LITERALS IS STRONGLY DISCOURAGED. It
is permitted only as a means of bypassing temporary
system limitations, such as name tables which are not
complete.
b. Why would you WANT to use it?
I want to test an app by writing a quick/dirty wrapper that sends mail to a
single, known, mail server and avoids DNS lookup.
First of all, it sounds like your app falls into the explicit exception
mentioned in the RFC.
The reason IP based email is discouraged is because it has zero
resilience to even the slightest change in network configuration.
Ideally, when you send me email, I want you to know (read - depend on)
as little as possible about my email setup.
Shachar
--
Shachar Shemesh
Lingnu Open Source Consulting Ltd.
http://www.lingnu.com
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