Internal SMTP Relay
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Anyone have a good guide for setting up a internal smtp relay?
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@voip_n00b What SMTP server will you be using inside to do the relaying?
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I’m looking to build a simply SMTP relay for internal devices to use to connect back to exchange.
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I don't have a guide but have researched it and the basic building blocks are your linux OS of choice and postfix.
So if you search for smtp relay and postfix you will find a lot of info.
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depending on your needs - you might not need a relay.
I have all of my AIO devices sending email directly to O365 without an issue. I had to create a rule in O365 allowing this, but it was pretty easy.
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@voip_n00b said in Internal SMTP Relay:
I’m looking to build a simply SMTP relay for internal devices to use to connect back to exchange.
In house exchange?
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@voip_n00b said in Internal SMTP Relay:
Anyone have a good guide for setting up a internal smtp relay?
I don't have a guide per se, but Ubuntu or Fedora running Postfix is always how I do it.
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@voip_n00b said in Internal SMTP Relay:
I’m looking to build a simply SMTP relay for internal devices to use to connect back to exchange.
That's more or less the scenario that we do it for.
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One of these days I will redo this on a modern OS... Hell I never even reposted it to my blog when I nuked it and redid it.
That will give you a fully working basic Postfix relay.
Enable your relay to send with TLS:
https://www.mangolassi.it/topic/12545/how-do-i-setup-tls-on-a-postfix-relay -
@voip_n00b said in Internal SMTP Relay:
Anyone have a good guide for setting up a internal smtp relay?
Exchange on-premises?
http://blog.mpecsinc.ca/2018/06/exchange-2013-set-up-receive-connector.html
That's the method we use to allow anonymous relay for devices on the network.
