AE v12.0 and before (and possible after). Notifications from AE via SMTP (Settings in UC_CLIENT_SETTINGS)
AE cannot be configured to use a SMTP Port other than 25, it also doesnt seem to take too kindly of SMTP servers that require SSL / Authentication. Out of the box, this makes it impossible to configure AE to send emails to anything but basic SMTP servers (no Gmail, etc.).
This article proposes a workaround by using a Email Server Relay between AE and any other SMTP server.
The example given here is with gmail's SMTP servers.
1- Install hmailserver on your server (very simple install procedure)
2- Open the Admin Console of hmailserver
3- Create a new Domain (ex: Automic.int)
4- Create an Account under your new Domain (ex: email@example.com)
5- (optional) activate logging (just in case, to make sure it works..)
6- configure Relay (Under Protocols -> SMTP - > Delivery of email
(local hostname: adr on which the hmailserver listens for incoming messages. localhost is fine if installed on the same server as AE)
-> this is where you specify the connection parameters to your "complex" SMTP server (Ex: Gmail)
7- configure your UC_CLIENT_SETTINGS accordingly:
SMTP_SERVER: Same address as specified in hmailserver
SMTP_FROM_ADDR: same address as the account created above
8- Test it: here is a screenshot of the notification coming from gmail: