Professional .NET Network Programming

I finally received my Professional .NET Network Programming. This book is particularly an interesting one, being part of the WROXified book series done by a gang of authors (7 in this case). It is in a technical category where there aren't many on the subject (.NET Network programming). I must admit, this is one of WROX's better ones and is now out of print (a WROX mishap). You can pick one up for about $12 via Amazon (while they last). Highly recommended - ch. 9 on EMail protocols is quite incisive.