diff --git a/offlineimap/imapserver.py b/offlineimap/imapserver.py
index be557e6..fb533a0 100644
--- a/offlineimap/imapserver.py
+++ b/offlineimap/imapserver.py
@@ -95,6 +95,9 @@ class IMAPServer:
             self.__verifycert = None  # Disable cert verification.
             # This way of working sucks hard...
         self.fingerprint = repos.get_ssl_fingerprint()
+        if self.fingerprint is not None:
+            self.__verifycert = None  # if we have a cert fingerprint
+            # we do not require verfication via CA
         self.tlslevel = repos.gettlslevel()
         self.sslversion = repos.getsslversion()
         self.starttls = repos.getstarttls()