Useful Tables

There are two tables of useful information in this chapter:

  • Table 16-1 lists all the -d categories in numerical order.

  • Table 16-2 lists only those -d catagories 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




Display system configuration information


Show sender information


Trace sendmail’s exit information


Print the load average


Trace disk-space calculations


Trace timed events


Show failed mail


Trace the queue filename


Trace hostname canonicalization


Trace identd exchanges


Trace recipient delivery


Trace delivery generally


Trace mapping of relative host


Trace the envelope and envelope splitting


Show header field commas


Trace incoming connections


Trace outgoing connections


Trace MX record lookups


Trace SMTP replies


Show ESMTP MAIL and RCPT parameters


Show delivery agent selection


Trace rules and rule sets


Show address tokenization




Trace assembly of address tokens


Trace the send-to list

-d26 ...

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