Apple has released a 10.1.4 update to Mac OS X Server.

It improves mail services running on the server – including better SMTP relay exchange for sending mail to other servers, and the ability to deliver mail from remote hosts that don’t specify a name.

Mac OS X Server is described by Apple as an “industrial-strength server with Macintosh ease-of-use”. Like OS X itself, it’s built on Apple’s Unix-based Darwin core – and includes wide support for most open Internet standards.

The ten-client edition of Mac OS X Server 10.1 costs £340. An unlimited licence costs £680 from the UK Apple Store. Prices exclude VAT.