Cutthrough: fix operation under -bhc to not actually deliver. Bug 1800

9 files changed, 260 insertions, 287 deletions

diff --git a/doc/doc-txt/ChangeLog b/doc/doc-txt/ChangeLog
index a3911ac18..eab7419be 100644
--- a/doc/doc-txt/ChangeLog
+++ b/doc/doc-txt/ChangeLog
@@ -179,6 +179,10 @@ JH/43 Tidy coding issues detected by gcc --fsanitize=undefined.  Some remain;
       either intentional arithmetic overflow during PRNG, or testing config-
       induced overflows.
 
+JH/44 Bug 1800: The combination of a -bhc commandline option and cutthrough
+      delivery resulted in actual delivery.  Cancel cutthrough before DATA
+      stage.
+
 
 
 Exim version 4.86
diff --git a/src/src/acl.c b/src/src/acl.c
index 684b93bbb..d508a29e7 100644
--- a/src/src/acl.c
+++ b/src/src/acl.c
@@ -4509,12 +4509,14 @@ case ACL_WHERE_RCPT:
 #ifndef DISABLE_PRDR
 case ACL_WHERE_PRDR:
 #endif
-  if (rc == OK  &&  cutthrough.delivery  && rcpt_count > cutthrough.nrcpt)
+  if (host_checking_callout)	/* -bhc mode */
+    cancel_cutthrough_connection("host-checking mode");
+  else if (rc == OK && cutthrough.delivery && rcpt_count > cutthrough.nrcpt)
     open_cutthrough_connection(addr);
   break;
 
 case ACL_WHERE_PREDATA:
-  if( rc == OK )
+  if (rc == OK)
     cutthrough_predata();
   else
     cancel_cutthrough_connection("predata acl not ok");
diff --git a/test/README b/test/README
index bcf03498d..5d9bed72d 100644
--- a/test/README
+++ b/test/README
@@ -928,7 +928,9 @@ input, details of which are given below. A number of options are implemented:
   -d       causes the server to output debugging information
 
   -t <sec> sets a timeout (default 5) for when the server is
-           awaiting an incoming connection
+           awaiting an incoming connection. If negative, the
+	   absolute value is used and a timeout results in a
+	   nonfailure exit code
 
   -noipv4  causes the server not to set up an IPv4 socket
 
diff --git a/test/confs/5402 b/test/confs/5402
new file mode 100644
index 000000000..e480b64b5
--- /dev/null
+++ b/test/confs/5402
@@ -0,0 +1,70 @@
+# Exim test configuration 5400
+
+exim_path = EXIM_PATH
+keep_environment =
+host_lookup_order = bydns
+primary_hostname = myhost.test.ex
+spool_directory = DIR/spool
+log_file_path = DIR/spool/log/%slog
+gecos_pattern = ""
+gecos_name = CALLER_NAME
+tls_advertise_hosts =
+
+log_selector = +received_recipients
+
+# ----- Main settings -----
+
+domainlist local_domains = test.ex : *.test.ex
+
+acl_smtp_rcpt = ar
+
+
+# ----- ACLs -----
+
+begin acl
+
+ar:
+  warn	control =	cutthrough_delivery
+	logwrite =	rcpt for $local_part@$domain
+  warn	condition =	${if eq {verify}{$local_part}}
+	verify =	recipient/callout=use_sender
+  accept
+
+# ----- Routers -----
+
+begin routers
+
+dns:
+  driver = dnslookup
+  domains = localhost.test.ex : localhost4.test.ex : thishost.test.ex
+  self = send
+  transport = smtp
+
+all:
+  driver = manualroute
+  domains = ! +local_domains
+  route_list = special.com HOSTIPV4 ; * 127.0.0.1
+  self = send
+  transport = ${if eq {special_tpt}{$local_part} {smtp2}{smtp}}
+  headers_remove = X-hdr-rtr
+  headers_add =    X-hdr-rtr-new: $h_X-hdr-rtr:+++
+  no_more
+
+
+# ----- Transports -----
+
+begin transports
+
+smtp:
+  driver = smtp
+  interface = HOSTIPV4
+  port = PORT_S
+  headers_add =  ${if def:h_X-hdr-rtr {X-hdr-tpt-new: new} {}}
+
+smtp2:
+  driver = smtp
+  interface = HOSTIPV4
+  port = PORT_S
+
+
+# End
diff --git a/test/runtest b/test/runtest
index 18ed0915d..96f5c11e9 100755
--- a/test/runtest
+++ b/test/runtest
@@ -3733,8 +3733,9 @@ foreach $test (@test_list)
 
     my($subtest_startline) = $lineno;
 
-    # Now run the command. The function returns 0 if exim was run and waited
-    # for, 1 if any other command was run and waited for, and 2 if a command
+    # Now run the command. The function returns 0 for an inline command,
+    # 1 if a non-exim command was run and waited for, 2 if an exim
+    # command was run and waited for, and 3 if a command
     # was run and not waited for (usually a daemon or server startup).
 
     my($commandname) = "";
diff --git a/test/scripts/5400-cutthrough/5402 b/test/scripts/5400-cutthrough/5402
new file mode 100644
index 000000000..3e6f3189e
--- /dev/null
+++ b/test/scripts/5400-cutthrough/5402
@@ -0,0 +1,42 @@
+# cutthrough_delivery and -bhc
+need_ipv4
+munge loopback
+no_msglog_check
+#
+# Despite config for cutthrough should not make onward conn
+server -t -2 PORT_S
+****
+exim -bhc 1.2.3.4
+EHLO myhost.test.ex
+MAIL FROM:<CALLER@myhost.test.ex>
+RCPT TO:<plain@domain.com>
+DATA
+
+.
+QUIT
+****
+#
+# Onward conn made for r-verify but cleared before DATA
+server PORT_S
+220 server ready
+EHLO
+250 OK
+MAIL
+250 OK
+RCPT
+250 OK
+QUIT
+220 OK
+*eof
+****
+exim -bhc 1.2.3.4
+EHLO myhost.test.ex
+MAIL FROM:<CALLER@myhost.test.ex>
+RCPT TO:<verify@domain.com>
+DATA
+
+.
+QUIT
+****
+#
+# End
diff --git a/test/src/server.c b/test/src/server.c
index 5c6080238..3aecf76f0 100644
--- a/test/src/server.c
+++ b/test/src/server.c
@@ -65,13 +65,14 @@ typedef struct line {
 /*************************************************
 *            SIGALRM handler - crash out         *
 *************************************************/
+int tmo_noerror = 0;
 
 static void
 sigalrm_handler(int sig)
 {
 sig = sig;    /* Keep picky compilers happy */
 printf("\nServer timed out\n");
-exit(99);
+exit(tmo_noerror ? 0 : 99);
 }
 
 
@@ -215,7 +216,10 @@ if (argc > 1 && (!strcmp(argv[1], "--help") || !strcmp(argv[1], "-h")))
 while (na < argc && argv[na][0] == '-')
   {
   if (strcmp(argv[na], "-d") == 0) debug = 1;
-  else if (strcmp(argv[na], "-t") == 0) timeout = atoi(argv[++na]);
+  else if (strcmp(argv[na], "-t") == 0)
+    {
+    if (tmo_noerror = ((timeout = atoi(argv[++na])) < 0)) timeout = -timeout;
+    }
   else if (strcmp(argv[na], "-i") == 0) initial_pause = atoi(argv[++na]);
   else if (strcmp(argv[na], "-noipv4") == 0) use_ipv4 = 0;
   else if (strcmp(argv[na], "-noipv6") == 0) use_ipv6 = 0;
diff --git a/test/stderr/5402 b/test/stderr/5402
index 7babe3546..49d3574fe 100644
--- a/test/stderr/5402
+++ b/test/stderr/5402
@@ -1,274 +1,91 @@
-Exim version x.yz ....
-configuration file is TESTSUITE/test-config
-admin user
- in hosts_connection_nolog? no (option unset)
-LOG: smtp_connection MAIN
-  SMTP connection from CALLER
-expanding: $smtp_active_hostname ESMTP Exim $version_number $tod_full
-   result: myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
- in pipelining_advertise_hosts? yes (matched "*")
- in tls_advertise_hosts? yes (matched "*")
-expanding: SERVER
-   result: SERVER
-expanding: server
-   result: server
-condition: eq {SERVER}{server}
-   result: false
-expanding: queue
-   result: queue
-skipping: result is not used
-expanding: cutthrough
-   result: cutthrough
-expanding: ${if eq {SERVER}{server}{queue}{cutthrough}}
-   result: cutthrough
-using ACL "cutthrough"
-processing "accept"
-check control = cutthrough_delivery
-check verify = recipient
-domain.com in "test.ex : *.test.ex"? no (end of list)
-domain.com in "! +local_domains"? yes (end of list)
-expanding: $local_part
-   result: userx
-domain.com in "*"? yes (matched "*")
------------ end verify ------------
-accept: condition test succeeded in ACL "cutthrough"
------------ start cutthrough setup ------------
-domain.com in "test.ex : *.test.ex"? no (end of list)
-domain.com in "! +local_domains"? yes (end of list)
-expanding: $local_part
-   result: userx
-domain.com in "*"? yes (matched "*")
-Connecting to 127.0.0.1 [127.0.0.1]:1225 from ip4.ip4.ip4.ip4 ... connected
-expanding: $primary_hostname
-   result: myhost.test.ex
-  SMTP<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
-127.0.0.1 in hosts_avoid_esmtp? no (option unset)
-  SMTP>> EHLO myhost.test.ex
-  SMTP<< 250-myhost.test.ex Hello the.local.host.name [ip4.ip4.ip4.ip4]
-         250-SIZE 52428800
-         250-8BITMIME
-         250-PIPELINING
-         250-STARTTLS
-         250 HELP
-expanding: $address_data
-   result: userx
-expanding: usery
-   result: usery
-condition: eq {$address_data}{usery}
-   result: false
-expanding: *
-   result: *
-skipping: result is not used
-expanding: :
-   result: :
-expanding: ${if eq {$address_data}{usery}{*}{:}}
-   result: :
-127.0.0.1 in hosts_avoid_tls? no (end of list)
-  SMTP>> STARTTLS
-  SMTP<< 220 TLS go ahead
-  SMTP>> EHLO myhost.test.ex
-  SMTP<< 250-myhost.test.ex Hello the.local.host.name [ip4.ip4.ip4.ip4]
-         250-SIZE 52428800
-         250-8BITMIME
-         250-PIPELINING
-         250 HELP
-  SMTP>> MAIL FROM:<CALLER@myhost.test.ex>
-  SMTP<< 250 OK
-  SMTP>> RCPT TO:<userx@domain.com>
-  SMTP<< 250 Accepted
------------ end cutthrough setup ------------
-processing "accept"
-accept: condition test succeeded in inline ACL
-  SMTP>> DATA
-  SMTP<< 354 Enter message, ending with "." on a line by itself
-expanding: ${tod_full}
-   result: Tue, 2 Mar 1999 09:44:33 +0000
-condition: def:sender_rcvhost
-   result: false
-expanding: from $sender_rcvhost
-	
-   result: from 
-	
-skipping: result is not used
-condition: def:sender_ident
-   result: true
-expanding: $sender_ident
-   result: CALLER
-expanding: from ${quote_local_part:$sender_ident} 
-   result: from CALLER 
-condition: def:sender_helo_name
-   result: true
-expanding: (helo=$sender_helo_name)
-	
-   result: (helo=myhost.test.ex)
-	
-expanding: ${if def:sender_ident {from ${quote_local_part:$sender_ident} }}${if def:sender_helo_name {(helo=$sender_helo_name)
-	}}
-   result: from CALLER (helo=myhost.test.ex)
-	
-condition: def:received_protocol
-   result: true
-expanding: with $received_protocol
-   result: with local-esmtp
-condition: def:sender_address
-   result: true
-expanding: (envelope-from <$sender_address>)
-	
-   result: (envelope-from <CALLER@myhost.test.ex>)
-	
-condition: def:received_for
-   result: true
-expanding: 
-	for $received_for
-   result: 
-	for userx@domain.com
-PDKIM <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
-expanding: ${tod_full}
-   result: Tue, 2 Mar 1999 09:44:33 +0000
-  SMTP>> .
-  SMTP<< 250 OK id=10HmaX-0005vi-00
-LOG: MAIN
-  >> userx@domain.com R=all T=smtp H=127.0.0.1 [127.0.0.1] X=TLSv1:AES256-SHA:256 C="250 OK id=10HmaX-0005vi-00"
-  SMTP>> QUIT
------------ cutthrough shutdown (delivered) ------------
-LOG: MAIN
-  <= CALLER@myhost.test.ex U=CALLER P=local-esmtp S=sss
-LOG: MAIN
-  Completed
-LOG: smtp_connection MAIN
-  SMTP connection from CALLER closed by QUIT
->>>>>>>>>>>>>>>> Exim pid=pppp terminating with rc=0 >>>>>>>>>>>>>>>>
-Exim version x.yz ....
-configuration file is TESTSUITE/test-config
-admin user
- in hosts_connection_nolog? no (option unset)
-LOG: smtp_connection MAIN
-  SMTP connection from CALLER
-expanding: $smtp_active_hostname ESMTP Exim $version_number $tod_full
-   result: myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
- in pipelining_advertise_hosts? yes (matched "*")
- in tls_advertise_hosts? yes (matched "*")
-expanding: SERVER
-   result: SERVER
-expanding: server
-   result: server
-condition: eq {SERVER}{server}
-   result: false
-expanding: queue
-   result: queue
-skipping: result is not used
-expanding: cutthrough
-   result: cutthrough
-expanding: ${if eq {SERVER}{server}{queue}{cutthrough}}
-   result: cutthrough
-using ACL "cutthrough"
-processing "accept"
-check control = cutthrough_delivery
-check verify = recipient
-domain.com in "test.ex : *.test.ex"? no (end of list)
-domain.com in "! +local_domains"? yes (end of list)
-expanding: $local_part
-   result: usery
-domain.com in "*"? yes (matched "*")
------------ end verify ------------
-accept: condition test succeeded in ACL "cutthrough"
------------ start cutthrough setup ------------
-domain.com in "test.ex : *.test.ex"? no (end of list)
-domain.com in "! +local_domains"? yes (end of list)
-expanding: $local_part
-   result: usery
-domain.com in "*"? yes (matched "*")
-Connecting to 127.0.0.1 [127.0.0.1]:1225 from ip4.ip4.ip4.ip4 ... connected
-expanding: $primary_hostname
-   result: myhost.test.ex
-  SMTP<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
-127.0.0.1 in hosts_avoid_esmtp? no (option unset)
-  SMTP>> EHLO myhost.test.ex
-  SMTP<< 250-myhost.test.ex Hello the.local.host.name [ip4.ip4.ip4.ip4]
-         250-SIZE 52428800
-         250-8BITMIME
-         250-PIPELINING
-         250-STARTTLS
-         250 HELP
-expanding: $address_data
-   result: usery
-expanding: usery
-   result: usery
-condition: eq {$address_data}{usery}
-   result: true
-expanding: *
-   result: *
-expanding: :
-   result: :
-skipping: result is not used
-expanding: ${if eq {$address_data}{usery}{*}{:}}
-   result: *
-127.0.0.1 in hosts_avoid_tls? yes (matched "*")
-  SMTP>> MAIL FROM:<CALLER@myhost.test.ex>
-  SMTP<< 250 OK
-  SMTP>> RCPT TO:<usery@domain.com>
-  SMTP<< 250 Accepted
------------ end cutthrough setup ------------
-processing "accept"
-accept: condition test succeeded in inline ACL
-  SMTP>> DATA
-  SMTP<< 354 Enter message, ending with "." on a line by itself
-expanding: ${tod_full}
-   result: Tue, 2 Mar 1999 09:44:33 +0000
-condition: def:sender_rcvhost
-   result: false
-expanding: from $sender_rcvhost
-	
-   result: from 
-	
-skipping: result is not used
-condition: def:sender_ident
-   result: true
-expanding: $sender_ident
-   result: CALLER
-expanding: from ${quote_local_part:$sender_ident} 
-   result: from CALLER 
-condition: def:sender_helo_name
-   result: true
-expanding: (helo=$sender_helo_name)
-	
-   result: (helo=myhost.test.ex)
-	
-expanding: ${if def:sender_ident {from ${quote_local_part:$sender_ident} }}${if def:sender_helo_name {(helo=$sender_helo_name)
-	}}
-   result: from CALLER (helo=myhost.test.ex)
-	
-condition: def:received_protocol
-   result: true
-expanding: with $received_protocol
-   result: with local-esmtp
-condition: def:sender_address
-   result: true
-expanding: (envelope-from <$sender_address>)
-	
-   result: (envelope-from <CALLER@myhost.test.ex>)
-	
-condition: def:received_for
-   result: true
-expanding: 
-	for $received_for
-   result: 
-	for usery@domain.com
-PDKIM <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
-expanding: ${tod_full}
-   result: Tue, 2 Mar 1999 09:44:33 +0000
-  SMTP>> .
-  SMTP<< 250 OK id=10HmaZ-0005vi-00
-LOG: MAIN
-  >> usery@domain.com R=all T=smtp H=127.0.0.1 [127.0.0.1] C="250 OK id=10HmaZ-0005vi-00"
-  SMTP>> QUIT
------------ cutthrough shutdown (delivered) ------------
-LOG: MAIN
-  <= CALLER@myhost.test.ex U=CALLER P=local-esmtp S=sss
-LOG: MAIN
-  Completed
-LOG: smtp_connection MAIN
-  SMTP connection from CALLER closed by QUIT
->>>>>>>>>>>>>>>> Exim pid=pppp terminating with rc=0 >>>>>>>>>>>>>>>>
-
-******** SERVER ********
+>>> host in hosts_connection_nolog? no (option unset)
+>>> host in host_lookup? no (option unset)
+>>> host in host_reject_connection? no (option unset)
+>>> host in sender_unqualified_hosts? no (option unset)
+>>> host in recipient_unqualified_hosts? no (option unset)
+>>> host in helo_verify_hosts? no (option unset)
+>>> host in helo_try_verify_hosts? no (option unset)
+>>> host in helo_accept_junk_hosts? no (option unset)
+>>> myhost.test.ex in helo_lookup_domains? yes (matched "@")
+>>> looking up host name for 1.2.3.4
+LOG: no host name found for IP address 1.2.3.4
+>>> host in dsn_advertise_hosts? no (option unset)
+>>> host in pipelining_advertise_hosts? yes (matched "*")
+>>> using ACL "ar"
+>>> processing "warn"
+>>> check control = cutthrough_delivery
+>>> check logwrite = rcpt for $local_part@$domain
+>>>                = rcpt for plain@domain.com
+LOG: rcpt for plain@domain.com
+>>> warn: condition test succeeded in ACL "ar"
+>>> processing "warn"
+>>> check condition = ${if eq {verify}{$local_part}}
+>>>                 = 
+>>> warn: condition test failed in ACL "ar"
+>>> processing "accept"
+>>> accept: condition test succeeded in ACL "ar"
+>>> end of ACL "ar": ACCEPT
+LOG: 10HmaX-0005vi-00 <= CALLER@myhost.test.ex H=(myhost.test.ex) [1.2.3.4] P=esmtp S=sss for plain@domain.com
+>>> host in hosts_connection_nolog? no (option unset)
+>>> host in host_lookup? no (option unset)
+>>> host in host_reject_connection? no (option unset)
+>>> host in sender_unqualified_hosts? no (option unset)
+>>> host in recipient_unqualified_hosts? no (option unset)
+>>> host in helo_verify_hosts? no (option unset)
+>>> host in helo_try_verify_hosts? no (option unset)
+>>> host in helo_accept_junk_hosts? no (option unset)
+>>> myhost.test.ex in helo_lookup_domains? yes (matched "@")
+>>> looking up host name for 1.2.3.4
+LOG: no host name found for IP address 1.2.3.4
+>>> host in dsn_advertise_hosts? no (option unset)
+>>> host in pipelining_advertise_hosts? yes (matched "*")
+>>> using ACL "ar"
+>>> processing "warn"
+>>> check control = cutthrough_delivery
+>>> check logwrite = rcpt for $local_part@$domain
+>>>                = rcpt for verify@domain.com
+LOG: rcpt for verify@domain.com
+>>> warn: condition test succeeded in ACL "ar"
+>>> processing "warn"
+>>> check condition = ${if eq {verify}{$local_part}}
+>>>                 = true
+>>> check verify = recipient/callout=use_sender
+>>> >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
+>>> routing verify@domain.com
+>>> domain.com in "localhost.test.ex : localhost4.test.ex : thishost.test.ex"? no (end of list)
+>>> domain.com in "test.ex : *.test.ex"? no (end of list)
+>>> domain.com in "! +local_domains"? yes (end of list)
+>>> calling all router
+>>> domain.com in "special.com"? no (end of list)
+>>> domain.com in "*"? yes (matched "*")
+>>> local host found for non-MX address
+>>> fully qualified name = 127.0.0.1
+MUNGED: ::1 will be omitted in what follows
+>>> get[host|ipnode]byname[2] looked up these IP addresses:
+>>>   name=127.0.0.1 address=127.0.0.1
+>>> routed by all router
+>>> Attempting full verification using callout
+>>> callout cache: no domain record found for domain.com
+>>> callout cache: no address record found for verify@domain.com/<CALLER@myhost.test.ex>
+>>> interface=ip4.ip4.ip4.ip4 port=1224
+>>> Connecting to 127.0.0.1 [127.0.0.1]:1224 from ip4.ip4.ip4.ip4 ... connected
+>>>   SMTP<< 220 server ready
+>>> 127.0.0.1 in hosts_avoid_esmtp? no (option unset)
+>>>   SMTP>> EHLO myhost.test.ex
+>>>   SMTP<< 250 OK
+>>> 127.0.0.1 in hosts_require_auth? no (option unset)
+>>>   SMTP>> MAIL FROM:<CALLER@myhost.test.ex>
+>>>   SMTP<< 250 OK
+>>>   SMTP>> RCPT TO:<verify@domain.com>
+>>>   SMTP<< 250 OK
+>>> wrote callout cache domain record:
+>>>   result=1 postmaster=0 random=0
+>>> wrote positive callout cache address record
+>>> ----------- end verify ------------
+>>> warn: condition test succeeded in ACL "ar"
+>>> processing "accept"
+>>> accept: condition test succeeded in ACL "ar"
+>>> end of ACL "ar": ACCEPT
+>>>   SMTP>> QUIT
+>>> ----------- cutthrough shutdown (host-checking mode) ------------
+LOG: 10HmaY-0005vi-00 <= CALLER@myhost.test.ex H=(myhost.test.ex) [1.2.3.4] P=esmtp S=sss for verify@domain.com
diff --git a/test/stdout/5402 b/test/stdout/5402
index 252c82917..c0548bae7 100644
--- a/test/stdout/5402
+++ b/test/stdout/5402
@@ -1,24 +1,55 @@
+
+**** SMTP testing session as if from host 1.2.3.4
+**** but without any ident (RFC 1413) callback.
+**** This is not for real!
+
 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000

-250-myhost.test.ex Hello CALLER at myhost.test.ex

+250-myhost.test.ex Hello myhost.test.ex [1.2.3.4]

 250-SIZE 52428800

 250-8BITMIME

 250-PIPELINING

-250-STARTTLS

 250 HELP

 250 OK

 250 Accepted

 354 Enter message, ending with "." on a line by itself

-250 OK id=10HmaY-0005vi-00

+250 OK id=10HmaX-0005vi-00

+
+**** SMTP testing: that is not a real message id!
+
 221 myhost.test.ex closing connection

+
+**** SMTP testing session as if from host 1.2.3.4
+**** but without any ident (RFC 1413) callback.
+**** This is not for real!
+
 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000

-250-myhost.test.ex Hello CALLER at myhost.test.ex

+250-myhost.test.ex Hello myhost.test.ex [1.2.3.4]

 250-SIZE 52428800

 250-8BITMIME

 250-PIPELINING

-250-STARTTLS

 250 HELP

 250 OK

 250 Accepted

 354 Enter message, ending with "." on a line by itself

-250 OK id=10HmbA-0005vi-00

+250 OK id=10HmaY-0005vi-00

+
+**** SMTP testing: that is not a real message id!
+
 221 myhost.test.ex closing connection

+
+******** SERVER ********
+Listening on port 1224 ... 
+Server timed out
+Listening on port 1224 ... 
+Connection request from [ip4.ip4.ip4.ip4]
+220 server ready
+EHLO myhost.test.ex
+250 OK
+MAIL FROM:<CALLER@myhost.test.ex>
+250 OK
+RCPT TO:<verify@domain.com>
+250 OK
+QUIT
+220 OK
+Expected EOF read from client
+End of script