src/bounce/bounce_notify_service.c

23 /*	(send bounce message) request.
30 /*	When a bounce is sent, the sender address is the empty
31 /*	address.  When a bounce bounces, an optional double bounce
33 /*	with as sender address the double bounce address.
38 /*	bounce(3) basic bounce service client interface
75 #include <bounce.h>
84 /* bounce_notify_service - send a bounce */
94     VSTREAM *bounce;
102      * Initialize. Open queue file, bounce log, etc.
104      * XXX DSN The bounce service produces RFC 3464-style "failed mail" reports
107      * 1 - bounce: this file is used for RFC 3464-style reports of permanent
108      * delivery errors by the bounce(8) service. This reports to the sender
115      * 2a) RFC 3464-style "mail is too old" reports by the bounce(8) service.
141      * single bounce (a non-delivery notification to the message originator),
142      * the sender address is the empty string. For a double bounce (typically
143      * a failed single bounce, or a postmaster notification that was produced
145      * var_double_bounce_sender configuration variable. When a double bounce
147      * bounce message.
151      * Double bounce failed. Never send a triple bounce.
155      * recognize the double-bounce recipient address and discard mail, or
156      * every delivery agent must recognize the double-bounce sender address
166      * Single bounce failed. Optionally send a double bounce to postmaster,
177 	    if ((bounce = post_mail_fopen_nowait(mail_addr_double_bounce(),
184 		 * Double bounce to Postmaster. This is the last opportunity
186 		 * reason for the bounce, and the headers of the original
190 		if (bounce_header(bounce, bounce_info, postmaster,
192 		    && (count = bounce_diagnostic_log(bounce, bounce_info,
194 		    && bounce_header_dsn(bounce, bounce_info) == 0
195 		    && bounce_diagnostic_dsn(bounce, bounce_info,
197 		    bounce_original(bounce, bounce_info, DSN_RET_FULL);
198 		    bounce_status = post_mail_fclose(bounce);
204 		    (void) vstream_fclose(bounce);
213      * Non-bounce failed. Send a single bounce to the sender, subject to DSN
217 	if ((bounce = post_mail_fopen_nowait(NULL_SENDER, recipient,
223 	     * Send the bounce message header, some boilerplate text that
225 	     * reason for the bounce, and a copy of the original message.
228 	    if (bounce_header(bounce, bounce_info, recipient,
230 		&& bounce_boilerplate(bounce, bounce_info) == 0
231 		&& (count = bounce_diagnostic_log(bounce, bounce_info,
233 		&& bounce_header_dsn(bounce, bounce_info) == 0
234 		&& bounce_diagnostic_dsn(bounce, bounce_info,
236 		bounce_original(bounce, bounce_info, dsn_ret ?
238 		bounce_status = post_mail_fclose(bounce);
244 		(void) vstream_fclose(bounce);
255 	 * retransmit the bounce that we just generated, just log a warning.
263 	     * Send the text with reason for the bounce, and the headers of
266 	     * don't retransmit the bounce that we just generated, just log a
270 	    if ((bounce = post_mail_fopen_nowait(mail_addr_double_bounce(),
276 		if (bounce_header(bounce, bounce_info, postmaster,
278 		    && (count = bounce_diagnostic_log(bounce, bounce_info,
280 		    && bounce_header_dsn(bounce, bounce_info) == 0
281 		    && bounce_diagnostic_dsn(bounce, bounce_info,
283 		    bounce_original(bounce, bounce_info, DSN_RET_HDRS);
284 		    postmaster_status = post_mail_fclose(bounce);
290 		    (void) vstream_fclose(bounce);
308      * Examine the completion status. Delete the bounce log file only when
309      * the bounce was posted successfully, and only if we are bouncing for