Enable noreply config in attempt to reduce bounce emails.
$wgEmergencyContact = "<%= @mediawiki[:email_contact] %>";
$wgPasswordSender = "<%= @mediawiki[:email_sender] %>";
$wgPasswordSenderName = "<%= @mediawiki[:email_sender_name] %>"; //Replaced by MediaWiki:Emailsender in v1.23.0
$wgEmergencyContact = "<%= @mediawiki[:email_contact] %>";
$wgPasswordSender = "<%= @mediawiki[:email_sender] %>";
$wgPasswordSenderName = "<%= @mediawiki[:email_sender_name] %>"; //Replaced by MediaWiki:Emailsender in v1.23.0
+$wgNoReplyAddress = "<%= @mediawiki[:email_sender] %>";
$wgEnotifUserTalk = true; # UPO
$wgEnotifWatchlist = true; # UPO
$wgEnotifUserTalk = true; # UPO
$wgEnotifWatchlist = true; # UPO