\
test850 test851 test852 test853 test854 test855 test856 test857 test858 \
test859 test860 test861 test862 test863 test864 test865 test866 test867 \
-test868 test869 test870 \
+test868 test869 test870 test871 \
\
test900 test901 test902 test903 test904 test905 test906 test907 test908 \
test909 test910 test911 test912 test913 test914 test915 test916 test917 \
--- /dev/null
+<testcase>
+<info>
+<keywords>
+POP3
+POP3 AUTH PLAIN SASL-IR
+RFC1734
+RFC4616
+RFC5034
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<servercmd>
+AUTH PLAIN
+REPLY AUTH +OK Login successful
+</servercmd>
+<data>
+From: me@somewhere\r
+To: fake@nowhere\r
+\r
+body\r
+\r
+--\r
+ yours sincerely\r
+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+pop3
+</server>
+ <name>
+POP3 plain authentication with initial response
+ </name>
+ <command>
+pop3://%HOSTIP:%POP3PORT/871 -u user:secret --sasl-ir
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+CAPA\r
+AUTH PLAIN dXNlcgB1c2VyAHNlY3JldA==\r
+RETR 871\r
+QUIT\r
+</protocol>
+</verify>
+</testcase>