Vyjmout chyby. Pokus 2. (from je očividně jen string)

various/mail_prefixer.py

@@ -14,7 +14,7 @@ class PrefixingMailBackend(DjangoSMTPBackend):
 		for message in messages:
 			# We hope that this is a django.core.mail.message.EmailMessage
 
-			if len(message.from_email) == 0 or message.from_email[0] != settings.SERVER_EMAIL:
+			if message.from_email != settings.SERVER_EMAIL:
 				message.subject = prefix + ' ' + message.subject
 				message.body = "Bylo by posláno na e-maily: " + str(message.recipients()) + "\n\n" + message.body
 				message.to = settings.TESTOVACI_EMAILOVA_KONFERENCE