Wrote a quick how-to on configuring Postfix to relay inside an organization
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If anyone is interested in how to set this up, I wrote, what I think is a clear and concise guide to setting up Postfix as a mail relay.
Edit: Changed link to archive.org
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Awesome, very useful. Lots of people will need this one.
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I don't have centOS running, and we don't have an internal Exchange - but I am curious to see if this will link into Office 365.
Of course we also don't have the VPN connections either....
yet.
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@g.jacobse said:
I don't have centOS running, and we don't have an internal Exchange - but I am curious to see if this will link into Office 365.
Of course we also don't have the VPN connections either....
yet.
Yes it will link into Office 365, however if you have Windows Servers setup you can install the mail relay feature of the IIS server. It installs an IIS6 web server and uses that to initiate the mail relay.
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Link to Office 365 or send to it? There are two different ways to handle it.
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@coliver said:
Yes it will link into Office 365, however if you have Windows Servers setup you can install the mail relay feature of the IIS server. It installs an IIS6 web server and uses that to initiate the mail relay.
Although that has been deprecated after 2008 R2.
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@scottalanmiller said:
@coliver said:
Yes it will link into Office 365, however if you have Windows Servers setup you can install the mail relay feature of the IIS server. It installs an IIS6 web server and uses that to initiate the mail relay.
Although that has been deprecated after 2008 R2.
Really? I didn't realize that, it is what I am using in Server 2012. I wonder if they are going to move that functionality to a new version of IIS.
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@coliver said:
Really? I didn't realize that, it is what I am using in Server 2012. I wonder if they are going to move that functionality to a new version of IIS.
They have stated that they will not. It was deprecated but still available in 2012, not even available in 2012 R2 and later. They stated that there are plenty of other products that do that for free, no need for them to provide it.
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@scottalanmiller said:
@coliver said:
Really? I didn't realize that, it is what I am using in Server 2012. I wonder if they are going to move that functionality to a new version of IIS.
They have stated that they will not. It was deprecated but still available in 2012, not even available in 2012 R2 and later. They stated that there are plenty of other products that do that for free, no need for them to provide it.
Good to know I will look into migrating that functionality off. Thanks.
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@g.jacobse said:
I don't have centOS running, and we don't have an internal Exchange - but I am curious to see if this will link into Office 365.
To set this up with Office 365, you have two choices.
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Configure Postfix to send as an authenticated user. And then give that user send as rights to all accounts that will use the mail relay.
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White list the public IP address that your mail relay is on in your office 365 to allow unauthenticated email to be sent through it.
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