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src/jflow/workflow.py

@@ -639,10 +639,23 @@ class Workflow(threading.Thread):
                     # envelope header.
                     s = smtplib.SMTP(smtps, smtpp)
                     s.ehlo()
-                    s.starttls()
-                    s.login(me, fromp)
-                    s.sendmail(me, [you], msg.as_string())
-                    s.close()
+                    # if the SMTP server does not provides TLS or identification
+                    try:
+                        s.starttls()
+                        s.login(me, fromp)
+                    except smtplib.SMTPHeloError:
+                        logging.getLogger("wf." + str(self.id)).debug("The server didn't reply properly to the HELO greeting.")
+                    except smtplib.SMTPAuthenticationError:
+                        logging.getLogger("wf." + str(self.id)).debug("The server didn't accept the username/password combination.")
+                    except smtplib.SMTPException:
+                        logging.getLogger("wf." + str(self.id)).debug("No suitable authentication method was found, or the server does not support the STARTTLS extension.")
+                    except RuntimeError:
+                        logging.getLogger("wf." + str(self.id)).debug("SSL/TLS support is not available to your Python interpreter.")
+                    except:
+                        logging.getLogger("wf." + str(self.id)).debug("Unhandled error when sending mail.")
+                    finally:
+                        s.sendmail(me, [you], msg.as_string())
+                        s.close()
                 except:
                     logging.getLogger("wf." + str(self.id)).debug("Impossible to connect to smtp server '" + smtps + "'")