diff --git a/tests/data/Makefile.am b/tests/data/Makefile.am
index c53def040..b5b5fd4f0 100644
--- a/tests/data/Makefile.am
+++ b/tests/data/Makefile.am
@@ -76,7 +76,8 @@ test877 test878 test879 test880 test881 \
test900 test901 test902 test903 test904 test905 test906 test907 test908 \
test909 test910 test911 test912 test913 test914 test915 test916 test917 \
test918 test919 test920 test921 test922 test923 test924 test925 test926 \
-test927 test928 test929 test930 test931 test932 test933 test934 \
+test927 test928 test929 test930 test931 test932 test933 test934 test935 \
+test936 test937
\
test1000 test1001 test1002 test1003 test1004 test1005 test1006 test1007 \
test1008 test1009 test1010 test1011 test1012 test1013 test1014 test1015 \
diff --git a/tests/data/test935 b/tests/data/test935
new file mode 100644
index 000000000..2f5a688a5
--- /dev/null
+++ b/tests/data/test935
@@ -0,0 +1,62 @@
+
+
+
+SMTP
+SMTP AUTH CRAM-MD5 SASL DOWNGRADE
+RFC2195
+RFC4954
+
+
+
+#
+# Server-side
+
+
+AUTH CRAM-MD5 PLAIN
+REPLY "AUTH CRAM-MD5" 334 Rubbish
+REPLY * 501 AUTH exchange cancelled by client
+REPLY "AUTH PLAIN" 334 PLAIN supported
+REPLY dXNlcgB1c2VyAHNlY3JldA== 235 Authenticated
+
+
+
+#
+# Client-side
+
+
+smtp
+
+
+crypto
+
+
+SMTP CRAM-MD5 authentication with SASL downgrade
+
+
+mail body
+
+
+smtp://%HOSTIP:%SMTPPORT/935 --mail-rcpt recipient@example.com --mail-from sender@example.com -u user:secret -T -
+
+
+
+#
+# Verify data after the test has been "shot"
+
+
+EHLO 935
+AUTH CRAM-MD5
+*
+AUTH PLAIN
+dXNlcgB1c2VyAHNlY3JldA==
+MAIL FROM:
+RCPT TO:
+DATA
+QUIT
+
+
+mail body
+.
+
+
+
diff --git a/tests/data/test936 b/tests/data/test936
new file mode 100644
index 000000000..98fcef575
--- /dev/null
+++ b/tests/data/test936
@@ -0,0 +1,72 @@
+
+
+
+SMTP
+SMTP AUTH NTLM SASL DOWNGRADE
+RFC4954
+
+
+
+#
+# Server-side
+
+
+AUTH NTLM PLAIN
+REPLY "AUTH NTLM" 334 NTLM supported
+REPLY TlRMTVNTUAABAAAABoIIAAAAAAAAAAAAAAAAAAAAAAA= 334 Rubbish
+REPLY * 501 AUTH exchange cancelled by client
+REPLY "AUTH PLAIN" 334 PLAIN supported
+REPLY dXNlcgB1c2VyAHNlY3JldA== 235 Authenticated
+
+
+
+#
+# Client-side
+
+
+smtp
+
+
+NTLM
+
+
+SMTP NTLM authentication with SASL downgrade
+
+
+mail body
+
+
+# we force our own host name, in order to make the test machine independent
+CURL_GETHOSTNAME=curlhost
+# we try to use the LD_PRELOAD hack, if not a debug build
+LD_PRELOAD=%PWD/libtest/.libs/libhostname.so
+
+
+smtp://%HOSTIP:%SMTPPORT/936 --mail-rcpt recipient@example.com --mail-from sender@example.com -u testuser:testpass -T -
+
+
+chkhostname curlhost
+
+
+
+#
+# Verify data after the test has been "shot"
+
+
+EHLO 936
+AUTH NTLM
+TlRMTVNTUAABAAAABoIIAAAAAAAAAAAAAAAAAAAAAAA=
+*
+AUTH PLAIN
+dXNlcgB1c2VyAHNlY3JldA==
+MAIL FROM:
+RCPT TO:
+DATA
+QUIT
+
+
+mail body
+.
+
+
+
diff --git a/tests/data/test937 b/tests/data/test937
new file mode 100644
index 000000000..2472ae399
--- /dev/null
+++ b/tests/data/test937
@@ -0,0 +1,63 @@
+
+
+
+SMTP
+SMTP AUTH DIGEST-MD5 SASL DOWNGRADE
+RFC2831
+RFC4954
+
+
+
+#
+# Server-side
+
+
+AUTH DIGEST-MD5 PLAIN
+REPLY "AUTH DIGEST-MD5" 334 Rubbish
+REPLY * 501 AUTH exchange cancelled by client
+REPLY "AUTH PLAIN" 334 PLAIN supported
+REPLY dXNlcgB1c2VyAHNlY3JldA== 235 Authenticated
+
+
+
+#
+# Client-side
+
+
+smtp
+
+
+debug
+crypto
+
+
+SMTP DIGEST-MD5 authentication with SASL downgrade
+
+
+mail body
+
+
+smtp://%HOSTIP:%SMTPPORT/937 --mail-rcpt recipient@example.com --mail-from sender@example.com -u user:secret -T -
+
+
+
+#
+# Verify data after the test has been "shot"
+
+
+EHLO 937
+AUTH DIGEST-MD5
+*
+AUTH PLAIN
+dXNlcgB1c2VyAHNlY3JldA==
+MAIL FROM:
+RCPT TO:
+DATA
+QUIT
+
+
+mail body
+.
+
+
+