do not fail if mail could not be sent, closes #9

uffd/selfservice/templates/set_password.html

@@ -14,7 +14,7 @@
 			<label for="user-password1">New Password</label>
 			<input type="password" class="form-control" id="user-password1" name="password1" required="required" tabindex = "2">
 			<small class="form-text text-muted">
-				At least 8 characters, no other special requirements. But please don't be stupid and use a password manager.
+				At least 8 and at most 256 characters, no other special requirements. But please don't be stupid and use a password manager.
 			</small>
 		</div>
 		<div class="form-group col-12">

uffd/selfservice/views.py

@@ -145,6 +145,7 @@ def send_passwordreset(loginname):
 	send_mail(user.mail, msg)
 
 def send_mail(to_address, msg):
+	try:
 		server = smtplib.SMTP(host=current_app.config['MAIL_SERVER'], port=current_app.config['MAIL_PORT'])
 		if current_app.config['MAIL_USE_STARTTLS']:
 			server.starttls()
@@ -155,3 +156,7 @@ def send_mail(to_address, msg):
 		msg['Message-ID'] = email.utils.make_msgid()
 		server.send_message(msg)
 		server.quit()
+		return True
+	except SMTPException:
+		flash('Mail to "{}" could not be sent!'.format(to_address))
+		return False