16.4 Table of All -d Categories

Because debugging is so closely tied to the internals of sendmail, we no longer cover all debugging switches in detail. In the reference section at the end of this chapter we cover, in detail, only those debugging switches that are useful to the administrator. In Table 16-4 we list all the debugging switches by category, regardless of their usefulness, 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 16-4. 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 identd exchanges
-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	Trace recipient queueing
-d27	Trace aliasing, ~/.forward file handling, and controlling user
-d28	Trace the User Database
-d29	Trace localaddr rule set rewrite of local recipient
-d30	Trace header processing
-d31	Trace header validation
-d32	Show collected headers
-d33	Watch crackaddr( )
-d34	Trace header generation and skipping
-d35	Trace macro definition and expansion
-d36	Trace the internal symbol table
-d37	Trace setting of options and classes
-d38	Trace database processing
-d39	Display digit database mapping
-d40	Trace processing of the queue
-d41	Trace queue ordering
-d42	Trace connection caching
-d43	Trace MIME conversions
-d44	Trace safefile( )
-d45	Trace envelope sender
-d46	Show xf file's descriptors
-d47	Trace effective/real user/group IDs
-d48	Trace calls to the check_ rule sets
-d49	Trace checkcompat( )
-d50	Trace envelope dropping
-d51	Trace unlocking and prevent unlink of xf file
-d52	Trace controlling TTY
-d53	Trace xclose( )
-d54	Show error return and output message
-d55	Trace file locking
-d56	Trace persistent host status
-d57	Monitor vsnprintf( ) overflows
-d58	Trace buffered file system I/O
-d59	Trace XLA from contrib
-d60	Trace database map lookups inside rewrite( )
-d61	Trace gethostbyname( )
-d62	Log file descriptors before and after all deliveries
-d63	Trace queue processing forks
-d64	Trace MILTER interactions
-d65	Trace nonallowed user actions
-d66	Unused
-d67	Unused
-d68	Unused
-d69	Unused
-d70	Unused
-d71	Unused
-d72	Unused
-d73	Unused
-d74	Unused
-d75	Unused
-d76	Unused
-d77	Unused
-d78	Unused
-d79	Unused
-d80	Trace Content-Length: header (Sun version)
-d81	Trace > option for remote mode (Sun version)
-d82	Unused
-d83	Unused
-d84	Unused
-d85	Unused
-d86	Unused
-d87	Unused
-d88	Unused
-d89	Unused
-d90	Unused
-d91	Log caching and uncaching connections
-d92	Unused
-d93	Unused
-d94	Force RSET failure
-d95	Trace AUTH= authentication
-d96	Allow SSL_CTX_set_info_callback( ) call
-d97	Trace setting of auto mode for I/O
-d98	Trace timers (commented out in the code)
-d99	Prevent backgrounding the daemon