Fixed #45: Custom SMTP server

src/pretix/base/models/event.py

@@ -3,6 +3,8 @@ from datetime import datetime
 
 from django.conf import settings
 from django.core.exceptions import ValidationError
+from django.core.mail import get_connection
+from django.core.mail.backends.smtp import EmailBackend
 from django.core.validators import RegexValidator
 from django.db import models
 from django.template.defaultfilters import date as _date
@@ -181,6 +183,18 @@ class Event(LoggedModel):
 
         return locking.LockManager(self)
 
+    def get_mail_backend(self, force_custom=False):
+        if self.settings.smtp_use_custom or force_custom:
+            return EmailBackend(host=self.settings.smtp_host,
+                                port=self.settings.smtp_port,
+                                username=self.settings.smtp_username,
+                                password=self.settings.smtp_password,
+                                use_tls=self.settings.smtp_use_tls,
+                                use_ssl=self.settings.smtp_use_ssl,
+                                fail_silently=False)
+        else:
+            return get_connection(fail_silently=False)
+
 
 class EventPermission(models.Model):
     """

src/pretix/base/services/mail.py

@@ -65,16 +65,18 @@ def mail(email: str, subject: str, template: str,
         )
         body += "\r\n"
     try:
-        return mail_send([email], subject, body, sender)
+        return mail_send([email], subject, body, sender, event.id)
     finally:
         translation.activate(_lng)
 
 
-def mail_send(to: str, subject: str, body: str, sender: str) -> bool:
+def mail_send(to: str, subject: str, body: str, sender: str, event: int) -> bool:
     email = EmailMessage(subject, body, sender, to=to)
+    event = Event.objects.get(id=event)
+    backend = event.get_mail_backend()
 
     try:
-        email.send(fail_silently=False)
+        backend.send_messages([email])
         return True
     except Exception:
         logger.exception('Error sending e-mail')

src/pretix/base/settings.py

@@ -123,7 +123,35 @@ You can change your order details and view the status of your order at
 
 Best regards,
 Your {event} team"""))
-    }
+    },
+    'smtp_use_custom': {
+        'default': 'False',
+        'type': bool
+    },
+    'smtp_host': {
+        'default': '',
+        'type': str
+    },
+    'smtp_port': {
+        'default': 587,
+        'type': int
+    },
+    'smtp_username': {
+        'default': '',
+        'type': str
+    },
+    'smtp_password': {
+        'default': '',
+        'type': str
+    },
+    'smtp_use_tls': {
+        'default': 'True',
+        'type': bool
+    },
+    'smtp_use_ssl': {
+        'default': 'False',
+        'type': bool
+    },
 }