E-MailRelay is a simple SMTP proxy and relay MTA, written in C++, for Linux and Windows. As a proxy all messages can be passed through a user-defined program, such as a spam-filter, which can drop, readdress, or edit messages as they pass through.
License
GNU General Public License version 2.0 (GPLv2)Follow E-MailRelay
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User Reviews
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Absolutely bulletproof. We use this to relay mail from all kinds of devices on our network through to our upstream email provider. It's nice to have the configuration for each sending device in a single file so we can easily see and audit it. But what we really love, is the stability of the application. It's genuinely bulletproof, never crashes, and doesn't have issues. I can say this with confidence after having run it for over 6 years without incident!
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excellent project. many thanks for the creator. I use it on windows environment as proxy feature. it can easily handle over 300K mail in days.
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My provider recently changed their policy to not allow unauthenticated SMTP to their servers anymore, and a few (older) devices were not able to sent out email notifications anymore because of that. Since those cards do not support smtp authentication and TLS I was looking for a simple relay service to use on my internal network. That is when I came across this nice piece of software I now use this application as a smtp relay for some old APC devices and switches to email notifications of events. Very easy to use and options are well documented. Will use this now as my default smtp server for all my devices. If I ever switch provider again all I have to do is one change in the emailrelay config and all devices are good again.
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this software worked for me, I had a situation where I could not submit directly to my mail server, this software provided an intermediary. I was a bit confused with how to correctly edit and format the authentication file, Graeme replied promptly with a simple solution.
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Best email proxy I've ever found! Works very stable on Windows