diff --git a/main.go b/main.go
index 2a773d9..25335d6 100644
--- a/main.go
+++ b/main.go
@@ -154,12 +154,12 @@ func modifyPasswordFile(email, password string) bool {
 	// find the entry with the given email
 	// replace the password with the new password
 	// write the file back
-	in, err := os.ReadFile("/root/docker/mail/config/postfix-accounts")
+	in, err := os.ReadFile("/root/docker/mail/config/postfix-accounts.cf")
 	if err != nil {
 		log.Println(err)
 		return false
 	}
-	out, err := os.Create("/root/docker/mail/config/postfix-accounts.tmp")
+	out, err := os.Create("/root/docker/mail/config/postfix-accounts.cf.tmp")
 	if err != nil {
 		log.Println(err)
 		return false
@@ -174,7 +174,7 @@ func modifyPasswordFile(email, password string) bool {
 		out.WriteString("\n")
 	}
 	out.Close()
-	os.Rename("/root/docker/mail/config/postfix-accounts.tmp", "/root/docker/mail/config/postfix-accounts")
+	os.Rename("/root/docker/mail/config/postfix-accounts.cf.tmp", "/root/docker/mail/config/postfix-accounts.cf")
 	return true
 }