diff --git a/src/testsuite/testsuite-message.c b/src/testsuite/testsuite-message.c
index 5eb1a931f..3623def4c 100644
--- a/src/testsuite/testsuite-message.c
+++ b/src/testsuite/testsuite-message.c
@@ -26,8 +26,8 @@ struct sieve_message_data testsuite_msgdata;
 static struct mail *testsuite_mail;
 
 static const char *_default_message_data =
-"From: stephan@rename-it.nl\n"
-"To: sirius@drunksnipers.com\n"
+"From: sender@example.com\n"
+"To: recipient@example.org\n"
 "Subject: Frop!\n"
 "\n"
 "Friep!\n";
diff --git a/tests/compile/trivial.sieve b/tests/compile/trivial.sieve
index 4546cefa3..a3dcbc14b 100644
--- a/tests/compile/trivial.sieve
+++ b/tests/compile/trivial.sieve
@@ -9,7 +9,7 @@ DisCaRD;
 if size :UNDER 34 {
 }
 
-if header :Is "from" "tukker@rename-it.n" {
+if header :Is "from" "tukker@example.com" {
 }
 
 # Numbers must be case-insensitive
diff --git a/tests/plugins/extprograms/bin/stderr b/tests/plugins/extprograms/bin/stderr
index 1dfd9bcd1..75b94b06b 100755
--- a/tests/plugins/extprograms/bin/stderr
+++ b/tests/plugins/extprograms/bin/stderr
@@ -14,7 +14,7 @@ echo "========================================" 1>&2
 echo 1>&2
 
 echo "Subject: frop!"
-echo "From: stephan@rename-it.nl"
+echo "From: stephan@example.org"
 echo "To: tss@example.com"
 echo
 echo "Frop!"