Mm debug MTA option

Debug MTA options:  (integer)
RESTRICTED: The  MTA option enables internal enqueue debugging; it is intended for use by Oracle, and is not intended to be used by end sites. In particular, it is not intended for, and is not supported for use for, logging purposes. Specifically, it enables debugging of the MM routines (enqueue routines handling address rewriting, mappings, conversions, etc.). Note that generally at least one of  or    must be set on a channel in order for   settings to take effect; the OpenVMS L channel is an exception and requires setting both   and. (In PMDF V5.1 and earlier, all channels required setting both  and   for    to take effect.)

Higher settings of  cause more verbose output. For instance, currently a value of 1 or more includes some message file access debugging and some alias file/database access debugging and some overview of header processing and debugging of access mapping table checks and  debugging of  address/subaddress variant lookups,  and some commenting about  spam/virus filter package verdicts,   and some debugging of  SPF lookups checked at MAIL FROM  or RCPT TO stages;  a value of 2 or more includes debugging of  conversion probes and debugging of  Sieve filter access  and some debugging of URL lookups (LDAP and file) and debugging of auto-registration and debugging of  mailing list keyword processing  and debugging of  constructing address/subaddress variants  and debugging of domainMap/domain-match-cache usage and   debugging of  whether TLS use is attempted,   and further information regarding spam/virus filter package access and errors; a value of 3 or more includes debugging of  mapping table use, and further debugging of the actual attribute lookups for LDAP URL lookups and domain lookups (including domain caching info),   and (as of MS 6.2) debugging regarding the reason when a message for multiple recipients is "split up" into different copies, and (as of MS 6.3) debugging regarding SRS/MUL decoding; a value of 4 or more includes some file reading debug especially on OpenVMS; a value of 5 causes very verbose output, including actual contents of the incoming message body, and details regarding spam/virus filter package opt in or opt out; in particular, a value of 8 or more includes some debugging of creating message files and writing out lines of message files and reading in message lines.

The precise debug output resulting from  can be expected to vary between and during releases.

See also:
 * Debug MTA options
 * master_debug Option
 * slave_debug Option