+/* If all parents are requested, or this is a local pipe/file/reply, and
+there is at least one intermediate parent, show it in brackets, and continue
+with all of them if all are wanted. */
+
+if ( (all_parents || testflag(addr, af_pfr))
+ && addr->parent
+ && addr->parent != topaddr)
+ {
+ uschar *s = US" (";
+ address_item *addr2;
+ for (addr2 = addr->parent; addr2 != topaddr; addr2 = addr2->parent)
+ {
+ str = string_catn(str, size, ptr, s, 2);
+ str = string_cat (str, size, ptr, addr2->address);
+ if (!all_parents) break;
+ s = US", ";
+ }
+ str = string_catn(str, size, ptr, US")", 1);
+ }
+
+/* Add the top address if it is required */
+
+if (add_topaddr)
+ str = string_append(str, size, ptr, 3,
+ US" <",
+ addr->onetime_parent ? addr->onetime_parent : topaddr->address,
+ US">");
+
+return str;
+}
+
+
+/******************************************************************************/
+
+
+
+/* If msg is NULL this is a delivery log and logchar is used. Otherwise
+this is a nonstandard call; no two-character delivery flag is written
+but sender-host and sender are prefixed and "msg" is inserted in the log line.
+
+Arguments:
+ flags passed to log_write()
+*/
+void
+delivery_log(int flags, address_item * addr, int logchar, uschar * msg)
+{
+int size = 256; /* Used for a temporary, */
+int ptr = 0; /* expanding buffer, for */
+uschar * s; /* building log lines; */
+void * reset_point; /* released afterwards. */
+
+/* Log the delivery on the main log. We use an extensible string to build up
+the log line, and reset the store afterwards. Remote deliveries should always
+have a pointer to the host item that succeeded; local deliveries can have a
+pointer to a single host item in their host list, for use by the transport. */
+
+#ifndef DISABLE_EVENT
+ /* presume no successful remote delivery */
+ lookup_dnssec_authenticated = NULL;
+#endif
+
+s = reset_point = store_get(size);
+
+if (msg)
+ s = string_append(s, &size, &ptr, 2, host_and_ident(TRUE), US" ");
+else
+ {
+ s[ptr++] = logchar;
+ s = string_catn(s, &size, &ptr, US"> ", 2);
+ }
+s = string_log_address(s, &size, &ptr, addr, LOGGING(all_parents), TRUE);
+
+if (LOGGING(sender_on_delivery) || msg)
+ s = string_append(s, &size, &ptr, 3, US" F=<",
+#ifdef SUPPORT_I18N
+ testflag(addr, af_utf8_downcvt)
+ ? string_address_utf8_to_alabel(sender_address, NULL)
+ :
+#endif
+ sender_address,
+ US">");
+
+if (*queue_name)
+ s = string_append(s, &size, &ptr, 2, US" Q=", queue_name);
+
+#ifdef EXPERIMENTAL_SRS
+if(addr->prop.srs_sender)
+ s = string_append(s, &size, &ptr, 3, US" SRS=<", addr->prop.srs_sender, US">");
+#endif
+
+/* You might think that the return path must always be set for a successful
+delivery; indeed, I did for some time, until this statement crashed. The case
+when it is not set is for a delivery to /dev/null which is optimised by not
+being run at all. */
+
+if (used_return_path && LOGGING(return_path_on_delivery))
+ s = string_append(s, &size, &ptr, 3, US" P=<", used_return_path, US">");
+
+if (msg)
+ s = string_append(s, &size, &ptr, 2, US" ", msg);
+
+/* For a delivery from a system filter, there may not be a router */
+if (addr->router)
+ s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
+
+s = string_append(s, &size, &ptr, 2, US" T=", addr->transport->name);
+
+if (LOGGING(delivery_size))
+ s = string_append(s, &size, &ptr, 2, US" S=",
+ string_sprintf("%d", transport_count));
+
+/* Local delivery */
+
+if (addr->transport->info->local)
+ {
+ if (addr->host_list)
+ s = string_append(s, &size, &ptr, 2, US" H=", addr->host_list->name);
+ s = d_log_interface(s, &size, &ptr);
+ if (addr->shadow_message)
+ s = string_cat(s, &size, &ptr, addr->shadow_message);
+ }
+
+/* Remote delivery */
+
+else
+ {
+ if (addr->host_used)
+ {
+ s = d_hostlog(s, &size, &ptr, addr);
+ if (continue_sequence > 1)
+ s = string_catn(s, &size, &ptr, US"*", 1);
+
+#ifndef DISABLE_EVENT
+ deliver_host_address = addr->host_used->address;
+ deliver_host_port = addr->host_used->port;
+ deliver_host = addr->host_used->name;
+
+ /* DNS lookup status */
+ lookup_dnssec_authenticated = addr->host_used->dnssec==DS_YES ? US"yes"
+ : addr->host_used->dnssec==DS_NO ? US"no"
+ : NULL;
+#endif
+ }
+
+#ifdef SUPPORT_TLS
+ s = d_tlslog(s, &size, &ptr, addr);
+#endif
+
+ if (addr->authenticator)
+ {
+ s = string_append(s, &size, &ptr, 2, US" A=", addr->authenticator);
+ if (addr->auth_id)
+ {
+ s = string_append(s, &size, &ptr, 2, US":", addr->auth_id);
+ if (LOGGING(smtp_mailauth) && addr->auth_sndr)
+ s = string_append(s, &size, &ptr, 2, US":", addr->auth_sndr);
+ }
+ }
+
+#ifndef DISABLE_PRDR
+ if (addr->flags & af_prdr_used)
+ s = string_catn(s, &size, &ptr, US" PRDR", 5);
+#endif
+
+ if (addr->flags & af_chunking_used)
+ s = string_catn(s, &size, &ptr, US" K", 2);
+ }
+
+/* confirmation message (SMTP (host_used) and LMTP (driver_name)) */
+
+if ( LOGGING(smtp_confirmation)
+ && addr->message
+ && (addr->host_used || Ustrcmp(addr->transport->driver_name, "lmtp") == 0)
+ )
+ {
+ unsigned i;
+ unsigned lim = big_buffer_size < 1024 ? big_buffer_size : 1024;
+ uschar *p = big_buffer;
+ uschar *ss = addr->message;
+ *p++ = '\"';
+ for (i = 0; i < lim && ss[i] != 0; i++) /* limit logged amount */
+ {
+ if (ss[i] == '\"' || ss[i] == '\\') *p++ = '\\'; /* quote \ and " */
+ *p++ = ss[i];
+ }
+ *p++ = '\"';
+ *p = 0;
+ s = string_append(s, &size, &ptr, 2, US" C=", big_buffer);
+ }
+
+/* Time on queue and actual time taken to deliver */
+
+if (LOGGING(queue_time))
+ s = string_append(s, &size, &ptr, 2, US" QT=",
+ readconf_printtime( (int) ((long)time(NULL) - (long)received_time)) );
+
+if (LOGGING(deliver_time))
+ s = string_append(s, &size, &ptr, 2, US" DT=",
+ readconf_printtime(addr->more_errno));
+
+/* string_cat() always leaves room for the terminator. Release the
+store we used to build the line after writing it. */
+
+s[ptr] = 0;
+log_write(0, flags, "%s", s);
+
+#ifndef DISABLE_EVENT
+if (!msg) msg_event_raise(US"msg:delivery", addr);
+#endif
+
+store_reset(reset_point);
+return;
+}
+
+
+
+static void
+deferral_log(address_item * addr, uschar * now,
+ int logflags, uschar * driver_name, uschar * driver_kind)
+{
+int size = 256; /* Used for a temporary, */
+int ptr = 0; /* expanding buffer, for */
+uschar * s; /* building log lines; */
+void * reset_point; /* released afterwards. */
+
+uschar ss[32];
+
+/* Build up the line that is used for both the message log and the main
+log. */
+
+s = reset_point = store_get(size);
+
+/* Create the address string for logging. Must not do this earlier, because
+an OK result may be changed to FAIL when a pipe returns text. */
+
+s = string_log_address(s, &size, &ptr, addr, LOGGING(all_parents), FALSE);
+
+if (*queue_name)
+ s = string_append(s, &size, &ptr, 2, US" Q=", queue_name);
+
+/* Either driver_name contains something and driver_kind contains
+" router" or " transport" (note the leading space), or driver_name is
+a null string and driver_kind contains "routing" without the leading
+space, if all routing has been deferred. When a domain has been held,
+so nothing has been done at all, both variables contain null strings. */
+
+if (driver_name)
+ {
+ if (driver_kind[1] == 't' && addr->router)
+ s = string_append(s, &size, &ptr, 2, US" R=", addr->router->name);
+ Ustrcpy(ss, " ?=");
+ ss[1] = toupper(driver_kind[1]);
+ s = string_append(s, &size, &ptr, 2, ss, driver_name);
+ }
+else if (driver_kind)
+ s = string_append(s, &size, &ptr, 2, US" ", driver_kind);
+
+/*XXX need an s+s+p sprintf */
+sprintf(CS ss, " defer (%d)", addr->basic_errno);
+s = string_cat(s, &size, &ptr, ss);
+
+if (addr->basic_errno > 0)
+ s = string_append(s, &size, &ptr, 2, US": ",
+ US strerror(addr->basic_errno));
+
+if (addr->host_used)
+ {
+ s = string_append(s, &size, &ptr, 5,
+ US" H=", addr->host_used->name,
+ US" [", addr->host_used->address, US"]");
+ if (LOGGING(outgoing_port))
+ {
+ int port = addr->host_used->port;
+ s = string_append(s, &size, &ptr, 2,
+ US":", port == PORT_NONE ? US"25" : string_sprintf("%d", port));
+ }
+ }
+
+if (addr->message)
+ s = string_append(s, &size, &ptr, 2, US": ", addr->message);
+
+s[ptr] = 0;
+
+/* Log the deferment in the message log, but don't clutter it
+up with retry-time defers after the first delivery attempt. */
+
+if (deliver_firsttime || addr->basic_errno > ERRNO_RETRY_BASE)
+ deliver_msglog("%s %s\n", now, s);
+
+/* Write the main log and reset the store.
+For errors of the type "retry time not reached" (also remotes skipped
+on queue run), logging is controlled by L_retry_defer. Note that this kind
+of error number is negative, and all the retry ones are less than any
+others. */
+
+
+log_write(addr->basic_errno <= ERRNO_RETRY_BASE ? L_retry_defer : 0, logflags,
+ "== %s", s);
+
+store_reset(reset_point);
+return;
+}
+
+
+
+static void
+failure_log(address_item * addr, uschar * driver_kind, uschar * now)
+{
+int size = 256; /* Used for a temporary, */
+int ptr = 0; /* expanding buffer, for */
+uschar * s; /* building log lines; */
+void * reset_point; /* released afterwards. */
+
+/* Build up the log line for the message and main logs */