Thread:Project:Support desk/create account notification email is not been sent/reply

Usually MediaWiki sends mail without further configuration.

Since the area lot of mail spam those days, some hosts block outgoing connections to an SMTP port, so it may be a problem (MediaWiki can't connect to target mailserver).

You may also need to configure $wgSMTP.

Enabling a debug log may give you the error message (if any) when sending mail.