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
+    },
 }
 
 

src/pretix/control/forms/event.py

@@ -212,6 +212,38 @@ class MailSettingsForm(SettingsForm):
         widget=I18nTextarea,
         help_text=_("Available placeholders: {event}, {url}")
     )
+    smtp_use_custom = forms.BooleanField(
+        label=_("Use custom SMTP server"),
+        help_text=_("All mail related to your event will be sent over the smtp server specified by you."),
+        required=False
+    )
+    smtp_host = forms.CharField(
+        label=_("Hostname"),
+        required=False
+    )
+    smtp_port = forms.IntegerField(
+        label=_("Port"),
+        required=False
+    )
+    smtp_username = forms.CharField(
+        label=_("Username"),
+        required=False
+    )
+    smtp_password = forms.CharField(
+        label=_("Password"),
+        required=False,
+        widget=forms.PasswordInput
+    )
+    smtp_use_tls = forms.BooleanField(
+        label=_("Use STARTTLS"),
+        help_text=_("Commonly enabled on port 587."),
+        required=False
+    )
+    smtp_use_ssl = forms.BooleanField(
+        label=_("Use SSL"),
+        help_text=_("Commonly enabled on port 465."),
+        required=False
+    )
 
 
 class TicketSettingsForm(SettingsForm):

src/pretix/control/templates/pretixcontrol/event/mail.html

@@ -15,10 +15,23 @@
             {% bootstrap_field form.mail_text_order_placed layout="horizontal" %}
             {% bootstrap_field form.mail_text_order_paid layout="horizontal" %}
         </fieldset>
+        <fieldset>
+            <legend>{% trans "SMTP settings" %}</legend>
+            {% bootstrap_field form.smtp_use_custom layout="horizontal" %}
+            {% bootstrap_field form.smtp_host layout="horizontal" %}
+            {% bootstrap_field form.smtp_port layout="horizontal" %}
+            {% bootstrap_field form.smtp_username layout="horizontal" %}
+            {% bootstrap_field form.smtp_password layout="horizontal" %}
+            {% bootstrap_field form.smtp_use_tls layout="horizontal" %}
+            {% bootstrap_field form.smtp_use_ssl layout="horizontal" %}
+        </fieldset>
         <div class="form-group submit-group">
             <button type="submit" class="btn btn-primary btn-save">
                 {% trans "Save" %}
             </button>
+            <button type="submit" class="btn btn-default btn-save pull-left" name="test" value="1">
+                {% trans "Save and test custom SMTP connection" %}
+            </button>
         </div>
     </form>
 {% endblock %}

src/pretix/control/views/event.py

@@ -235,7 +235,20 @@ class MailSettings(EventPermissionRequiredMixin, FormView):
                         k: form.cleaned_data.get(k) for k in form.changed_data
                     }
                 )
-            messages.success(self.request, _('Your changes have been saved.'))
+
+            if request.POST.get('test', '0').strip() == '1':
+                backend = self.request.event.get_mail_backend(force_custom=True)
+                try:
+                    backend.open()
+                except Exception as e:
+                    messages.warning(self.request, _('An error occured while contacting the SMTP server: %s') % str(e))
+                else:
+                    messages.success(self.request, _('Your changes have been saved and the connection attempt to '
+                                                     'your SMTP server was successful.'))
+                finally:
+                    backend.close()
+            else:
+                messages.success(self.request, _('Your changes have been saved.'))
             return redirect(self.get_success_url())
         else:
             return self.get(request)

src/pretix/plugins/sendmail/views.py

@@ -28,14 +28,14 @@ class SenderView(EventPermissionRequiredMixin, FormView):
         orders = Order.objects.filter(
             event=self.request.event, status__in=form.cleaned_data['sendto']
         )
-        mails = set([o.email for o in orders])
+        mails = set([(o.email, o.locale) for o in orders])
 
         self.request.event.log_action('pretix.plugins.sendmail.sent', user=self.request.user, data=dict(
             form.cleaned_data))
 
-        for m in mails:
+        for m, l in mails:
             mail(m, form.cleaned_data['subject'], form.cleaned_data['message'],
-                 None, self.request.event, locale=m.locale)
+                 None, self.request.event, locale=l)
 
         messages.success(self.request, _('Your message will be sent to the selected users.'))