Add SMTP mail host configuration options

resources/config/core.edn.base

@@ -32,4 +32,11 @@
 
  :mail-sender "sender@example.com"
 
+ :mail-host-config {:host "smtp.example.com"
+                    :user "yourusername"
+                    :pass "yourpassword"
+                    :ssl true
+                    :tls false
+                    :port 587}
+
  :data-dir "/path/to/data/directory"}

src/clj/salava/core/mail.clj

@@ -8,14 +8,18 @@
 
 (def mail-sender (:mail-sender config))
 
+(def mail-host-config (:mail-host-config config))
+
 (defn send-mail [subject message recipients]
   (try+
     (let [data {:from    mail-sender
                 :to      recipients
                 :subject subject
                 :body    [{:type    "text/plain; charset=utf-8"
                            :content message}]}]
-      (send-message data))
+      (if (nil? mail-host-config)
+        (send-message data)
+        (send-message mail-host-config data)))
     (catch Object _
       ;TODO log an error
       )))
@@ -44,4 +48,4 @@
         message (str fullname "\n\nYou have added the e-mail address '" email "' to your\naccount at " site-url". In order to complete the registration of\nthis email, you must confirm it by clicking the link below.\n\n"
                      email-verification-link
                      "\n\nIf the web address does not appear as a link, you must copy the address out\nof this email, and paste it into the address bar of your web browser.\n\nIf you do not confirm this e-mail in 5 days, it will be unregistered from\nyour account.\n")]
-    (send-mail subject message [email])))
+    (send-mail subject message [email])))