December 2002
Intermediate to advanced
1232 pages
56h 38m
English
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Pitfalls
Rules that hide hosts in a domain should be applied only to sender addresses. Avoid the temptation to place such substitutions of hosts for domain names into the
canonifyrule set 3. Thecanonifyrule set 3 applies to all addresses and can wrongly change a nonlocal address.Not all configuration files focus with user<@domain>. IDA, for example, uses a more complex focus: <@domain,...,user>. Be sure you understand the style of focusing that is used in your configuration file before attempting to create new rules.[7]
Avoid confusing rule sets 1 and 2 when adding rules. Rule set 1 is for the sender; rule set 2 is for the recipient.
Typos in rule-set declarations can be difficult to locate. For example,
S1O(in which the last character is the capital letter O) will silently evaluate to rule set 1 when you really meant rule set 10.
[7] Eric says that focusing might go away entirely in a future
release because it is no longer needed under updated route-addr
semantics, which discard the route part (Section 19.3.3), thereby guaranteeing that everything after
the @ is the host part.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.