Free local smtp relay server 3.11 software for windows

1st SMTP Server - a free SMTP relay server- is a simplest, easy to use SMTP mail relay server. It is used for relaying your email messages to its destinations quickly and easily. Whenever you need to send large amounts of email from a mass mailing program like Advanced Emailer You can install several servers like this one on different computers to minimize the load and to increase the speed of sending.

RadioRelay server is designed for digital radio broadcasting via Local area network or Internet. Broadcasting is realized with using UDP network protocol in MPEG1 Layer 3 audio format. Users can play audio from this server with Winamp (using plug-in that supports UDP audio broadcasting, e.g.: PIT Engineering UDP Player Winamp plug-in).
You can use SHOUTcast or Icecast servers as audio sources for RadioRelay. Main advantage of using RadioRelay server as a relay server of streaming audio is multicast broadcasting. Multicast broadcasting gives you unlimited ability for increasing audience of your listeners, because of lowering of network traffic and economy of system resources. RadioRelay server allows you to start your own Internet radio broadcasting with minimal financial investments.
RadioRelay does not transcode audio stream and ensure highest possible quality of audio data.

PHP SMTP Server for Windows 1 offers you the first version of Portable SMTP server in the world that can be used as a local SMTP server. It can be used along with virtually any mailer or email program including Microsoft Outlook, Outlook Express, Eudora, Netscape and The Bat, and it is ideal for laptop PC users who travel a lot and have to use different Internet Service Providers (ISP) on the run.

You can use it instead of your ISP's SMTP server to increase your email security and privacy due to your email messages will be delivered directly to the mailboxes of your recipients. you can use this software on your USB or CD-Rom without any installation, just by copying smtp.exe to your USB or CD-rom.

GPGrelay is a little relaying server which interferes SMTP- and POP3-Communication that way, that transmission of emails will be signed and/or encrypted on the fly using GnuPG (The GNU Privacy Guard) with your default email-program.
GPGrelay application will enable many email-clients to send and receive emails that are conform to PGP-MIME (RFC 2015, RFC 3156). But it can also handle simple emails containing normal PGP-Blocks (sometimes referred to as inlined PGP).
GPGrelay is, as indicated by its name a local relaying server. It works completely transparent for your Email-Client as well as for the remote Server.
Now, if you want to send emails encrypted, GPGrelay encrypts them and sends the encrypted mail to the SMTP-Server. If you receive an encrypted mail, GPGrelay does the decryption for you - so your Email-Client never sees any encrypted mails, which is quite a nice feature when your Email-Client (like Outlook Express) is not capable of handling those mails.
But this also means, if an eavesdropper has access to your local environment, where Emails are stored decrypted, he can easily get access to them!
But on the other hand: If an eavesdropper really is present in your local Site, he could probably setup some mechanism (Trojan Horses come to mind) to get your Keyring and the Passphrase you use...