MAPILab NNTP for Outlook 

MAPILab NNTP is MAPI transport, allows you to read and post to newsgroups in Microsoft Outlook. This means that a news server account works the same as Exchange Server or a POP3 account, support remote headers, all managed in the Send/Receive menu.
newsgroups outlook news addin nntp addon plugin outlook 2003 news server nntp server usenet outlook software

X-Ray Mail Assistant 

X-Ray Mail Assistant is an email header filter and POP/SMTP server switching tool. It runs as a local POP/SMTP relay server and scans your incoming and/or outgoing mail.
internet utilities mail header