September 2004
Intermediate to advanced
192 pages
10h 12m
English
Content preview from sendmail 8.13 Companion
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Useful Tables
There are two tables of useful information in this chapter:
Table 16-1 lists all the
-dcategories in numerical order.Table 16-2 lists only those
-dcatagories that are considered useful to the day-to-day management of sendmail.
Table of All -d Categories
In Table 16-1, we list all the debugging
switches by category,
regardless of their usefulness to the administrator, and give a brief
description of each. If you need more detail about those we do not
document, we suggest you use sendmail/TRACEFLAGS
as a guide to the appropriate source code files.
Table 16-1. Debugging switches by category
|
Category |
Description |
|---|---|
|
-d0 |
Display system configuration information |
|
-d1 |
Show sender information |
|
-d2 |
Trace sendmail’s exit information |
|
-d3 |
Print the load average |
|
-d4 |
Trace disk-space calculations |
|
-d5 |
Trace timed events |
|
-d6 |
Show failed mail |
|
-d7 |
Trace the queue filename |
|
-d8 |
Trace hostname canonicalization |
|
-d9 |
Trace |
|
-d10 |
Trace recipient delivery |
|
-d11 |
Trace delivery generally |
|
-d12 |
Trace mapping of relative host |
|
-d13 |
Trace the envelope and envelope splitting |
|
-d14 |
Show header field commas |
|
-d15 |
Trace incoming connections |
|
-d16 |
Trace outgoing connections |
|
-d17 |
Trace MX record lookups |
|
-d18 |
Trace SMTP replies |
|
-d19 |
Show ESMTP MAIL and RCPT parameters |
|
-d20 |
Show delivery agent selection |
|
-d21 |
Trace rules and rule sets |
|
-d22 |
Show address tokenization |
|
-d23 |
Unused |
|
-d24 |
Trace assembly of address tokens |
|
-d25 |
Trace the send-to list |
|
-d26 ... |
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.