>From RFC 2821 section 5. Address Resolution and Mail Handling
... If there are multiple destinations with the same preference
and there is no clear reason to favor one (e.g., by recognition of an
easily-reached address), then the sender-SMTP MUST randomize them to
spread the load across multiple mail exchangers for a specific
organization.
Right, which makes sense.
When it does a DNS lookup to get the IP address most DNS servers will
randomize or round-robin the list when there's multiples.
Well, what's "most" mean? Here's what I get back:
- Answer:
- A-record for mx1.hotmail.com.:
- IP address = 65.54.252.99
- TTL = 1 Hour
- A-record for mx1.hotmail.com.:
- IP address = 64.4.50.99
- TTL = 1 Hour
- A-record for mx1.hotmail.com.:
- IP address = 65.54.166.99
- TTL = 1 Hour
- A-record for mx1.hotmail.com.:
- IP address = 64.4.50.50
- TTL = 1 Hour
- A-record for mx1.hotmail.com.:
Oblio
