Prereq: "2.5.15"
diff -cr --new-file /var/tmp/postfix-2.5.15/src/global/mail_version.h ./src/global/mail_version.h
*** /var/tmp/postfix-2.5.15/src/global/mail_version.h	Fri Sep  2 17:44:42 2011
--- ./src/global/mail_version.h	Sun Oct 23 19:55:14 2011
***************
*** 20,27 ****
    * Patches change both the patchlevel and the release date. Snapshots have no
    * patchlevel; they change the release date only.
    */
! #define MAIL_RELEASE_DATE	"20110902"
! #define MAIL_VERSION_NUMBER	"2.5.15"
  
  #ifdef SNAPSHOT
  # define MAIL_VERSION_DATE	"-" MAIL_RELEASE_DATE
--- 20,27 ----
    * Patches change both the patchlevel and the release date. Snapshots have no
    * patchlevel; they change the release date only.
    */
! #define MAIL_RELEASE_DATE	"20111024"
! #define MAIL_VERSION_NUMBER	"2.5.16"
  
  #ifdef SNAPSHOT
  # define MAIL_VERSION_DATE	"-" MAIL_RELEASE_DATE
diff -cr --new-file /var/tmp/postfix-2.5.15/HISTORY ./HISTORY
*** /var/tmp/postfix-2.5.15/HISTORY	Fri Sep  2 17:44:07 2011
--- ./HISTORY	Thu Oct 20 17:40:57 2011
***************
*** 14740,14742 ****
--- 14740,14775 ----
  
  	Bitrot: OpenSSL const-ified some function result value.
  	Files: tls/tls_client.c, tls/tls_server.c.
+ 
+ 20110903
+ 
+ 	Bugfix: master daemon panic with "master_spawn: at process
+ 	limit" error, when "postfix reload" reduced the process
+ 	limit from (a value larger than the current process count
+ 	for some service) to (a value <= the current process count),
+ 	and then a new connection was made to that service.  This
+ 	is the smallest change that eliminates the problem. The
+ 	final solution involves structural change, and goes into
+ 	the development release. File: master/master_avail.c.
+ 
+ 20110921
+ 
+ 	Bugfix (introduced: Postfix 1.1): smtpd(8) did not sanitize
+ 	newline characters in cleanup(8) REJECT messages, causing
+ 	them to be sent out via SMTP as bare newline characters.
+ 	This happened when a REJECT pattern matched multi-line
+ 	header text.  Discovered by Kevin Locke.  File: smtpd/smtpd.c.
+ 
+ 20110922
+ 
+ 	Bugfix (introduced: Postfix 2.1): smtpd(8) sent multi-line
+ 	responses from a before-queue content filter as text with
+ 	bare <LF> instead of <CR><LF>.  Found during code maintenance.
+ 	File: smtpd/smtpd_proxy.c.
+ 
+ 20111020
+ 
+ 	EAI Future-proofing: don't apply strict_mime_encoding_domain
+ 	checks to unknown message subtypes such as message/global*.
+ 	File: global/mime_state.c.
+ 
diff -cr --new-file /var/tmp/postfix-2.5.15/src/global/mime_state.c ./src/global/mime_state.c
*** /var/tmp/postfix-2.5.15/src/global/mime_state.c	Wed Jan  9 08:59:40 2008
--- ./src/global/mime_state.c	Thu Oct 20 17:34:25 2011
***************
*** 925,931 ****
  		    if (state->curr_domain != MIME_ENC_7BIT)
  			REPORT_ERROR(state, MIME_ERR_ENCODING_DOMAIN,
  				 mime_state_enc_name(state->curr_encoding));
! 		} else {
  		    if (state->curr_encoding != state->curr_domain)
  			REPORT_ERROR(state, MIME_ERR_ENCODING_DOMAIN,
  				 mime_state_enc_name(state->curr_encoding));
--- 925,933 ----
  		    if (state->curr_domain != MIME_ENC_7BIT)
  			REPORT_ERROR(state, MIME_ERR_ENCODING_DOMAIN,
  				 mime_state_enc_name(state->curr_encoding));
! 		}
! 		/* EAI: message/global allows non-identity encoding. */
! 		else if (state->curr_stype == MIME_STYPE_RFC822) {
  		    if (state->curr_encoding != state->curr_domain)
  			REPORT_ERROR(state, MIME_ERR_ENCODING_DOMAIN,
  				 mime_state_enc_name(state->curr_encoding));
diff -cr --new-file /var/tmp/postfix-2.5.15/src/master/master_avail.c ./src/master/master_avail.c
*** /var/tmp/postfix-2.5.15/src/master/master_avail.c	Thu Sep  6 14:40:38 2007
--- ./src/master/master_avail.c	Thu Oct 20 17:34:25 2011
***************
*** 85,91 ****
  
      if (event == 0)				/* XXX Can this happen? */
  	return;
!     if (MASTER_THROTTLED(serv)) {		/* XXX interface botch */
  	for (n = 0; n < serv->listen_fd_count; n++)
  	    event_disable_readwrite(serv->listen_fd[n]);
      } else {
--- 85,93 ----
  
      if (event == 0)				/* XXX Can this happen? */
  	return;
!     /* XXX Should check these when the process or service status is changed. */
!     if (!MASTER_LIMIT_OK(serv->max_proc, serv->total_proc)
! 	|| MASTER_THROTTLED(serv)) {		/* XXX interface botch */
  	for (n = 0; n < serv->listen_fd_count; n++)
  	    event_disable_readwrite(serv->listen_fd[n]);
      } else {
diff -cr --new-file /var/tmp/postfix-2.5.15/src/smtpd/smtpd.c ./src/smtpd/smtpd.c
*** /var/tmp/postfix-2.5.15/src/smtpd/smtpd.c	Sat Jan  8 19:23:53 2011
--- ./src/smtpd/smtpd.c	Thu Oct 20 17:34:25 2011
***************
*** 2835,2840 ****
--- 2835,2841 ----
  	if (state->err == 0) {
  	    why = vstring_alloc(10);
  	    state->err = mail_stream_finish(state->dest, why);
+ 	    printable(STR(why), ' ');
  	} else
  	    mail_stream_cleanup(state->dest);
  	state->dest = 0;
diff -cr --new-file /var/tmp/postfix-2.5.15/src/smtpd/smtpd_proxy.c ./src/smtpd/smtpd_proxy.c
*** /var/tmp/postfix-2.5.15/src/smtpd/smtpd_proxy.c	Fri Aug 27 19:48:29 2010
--- ./src/smtpd/smtpd_proxy.c	Thu Oct 20 17:35:49 2011
***************
*** 542,548 ****
  	 */
  	if (LEN(state->proxy_buffer) < var_line_limit) {
  	    if (VSTRING_LEN(state->proxy_buffer))
! 		VSTRING_ADDCH(state->proxy_buffer, '\n');
  	    vstring_strcat(state->proxy_buffer, STR(buffer));
  	}
  
--- 542,548 ----
  	 */
  	if (LEN(state->proxy_buffer) < var_line_limit) {
  	    if (VSTRING_LEN(state->proxy_buffer))
! 		vstring_strcat(state->proxy_buffer, "\r\n");
  	    vstring_strcat(state->proxy_buffer, STR(buffer));
  	}