SMTP ACTIONS mapping table

New in MS 8.1, the  mapping table can be  used to process SMTP failure responses and successful delivery of messages in the SMTP client and customize the MTA&#x27;s handling in various ways.

If present, the  mapping is called whenever a failure is returned by the remote SMTP server. The mapping probe format is: port_access-probe-info&#x7c;app-info&#x7c;channel&#x7c;domain&#x7c;conversion-tags&#x7c;what&#x7c;reply New in MS 8.1.0.1, the conversion-tags are only included in the probe if bit 15, value 32768 of the   MTA is set.

Here   consists of all the information usually included in a  mapping table probe (see   mapping table) and   is application-specific information, which here will usually be      in the case of  messages being relayed over SMTP and          in the case of messages being relayed via SMTP over TLS.   is the channel from which the message is being dequeued,   is the destination domain,   is the DNS name of the server to which the message is being relayed,   is the name of the SMTP command that produced the error (INITIAL, EHLO/HELO, STARTTLLS, AUTH, MAIL, RCPT, DATASTART, DATAEND, RSET, QUIT), and   is the SMTP reply string.

As previously noted, the  is only called when a command fails and unconditionally for the end of data (DATAEND) response.

Note also that the  MTA option, if set, will cause any vertical bar characters that would have been in the    field to be replaced by the specified character.

The following flags can be set by the mapping:

See also:
 * MX_ACCESS mapping table
 * IP_ACCESS mapping table
 * mapping_paranoia MTA Option
 * TCPIP channels