Held sndopr MTA option

Syslog MTA options:  (0 or 1)
The  MTA option controls the production of syslog messages (on UNIX) when a message is forced into a held state due to certain suspicion thresholds. (Note that there are other potential causes of messages becoming , which are not covered by    -- cases corresponding to explicit MTA administrator action  such as execution of a    command, or cases  where the held state can be logged as part of normal logging, such as  execution of a  Sieve filter  action, either in an  explicit Sieve filter or as a  Sieve scriptlet executed due to a  spam/virus filter package verdict, or application of an  address-based &#x2a;_ACCESS mapping table     flag where syslog message  generation can be performed via   flag, or routing to the  hold channel due to a  user status or  domain status of. is meant to warn of cases that might otherwise be easier to miss noticing, especially for unanticipated incoming problem messages.)

Suspicious cases where  causes a syslog message  include:





A message may be forced into a held state because it has too many  Received: header lines (see the various    MTA options for additional information): HELDMSG, Header count exceeded; message has been marked .HELD automatically. 



Or a message may be forced into a held state because it has too many recipients (see the  channel option for more details): HELDMSG, Max recipient count exceeded; message has been marked .HELD automatically. 



Or a message may be forced into a held state because it has too many MIME parts or levels (see the  and   MTA options): HELDMSG, Max MIME part/level limit exceeded; message has been marked .HELD automatically. 



A value of 1 for   instructs the MTA to issue such messages when such cases occur. A value of 0 (the default) turns off these messages. The syslog messages will be issued using the configured   facility and severity.

See also:
 * Received header line MTA options
 * sndopr_prefix MTA Option
 * sndopr_priority MTA Option
 * max_mime_levels MTA Option
 * max_mime_parts MTA Option
 * Syslog MTA options
 * holdlimit Option
 * Access mapping tables
 * qclean utility
 * Sieve hold extension
 * spamfilter1_action_0 MTA Option
 * Hold channel
 * ldap_user_mail_status MTA Option
 * ldap_domain_attr_mail_status Option