[tech] IronPort migration (was: Email changes: Migration away from IronPorts for sending)

[James Arcus]

Hi all,

This project is now in full flight, with most UCC domains being migrated 
to send outbound directly from mailfish.

We're still restricted on receiving mail in directly on port 25, so for 
now I'm migrating our MX records to use forwardemail.net to bring mail 
in on a TLS mail port. There's a little bit of hackery involved to map 
domains between the ones used for forwarding (delivery.ucc.*) vs. the 
real ucc.* domain, but it's working fine as far as I can tell.

Please let me know if you have any trouble sending any mail, or any mail 
you expect to receive doesn't show up or takes an unexpectedly long 
amount of time to arrive.

Cheers,

James [MPT]

On 16/2/23 17:23, James Arcus wrote:
> Hi all,
>
> Just a quick update on the progress of preparing to migrate away from 
> the UWA IronPorts.
>
> Following some further discussion with Daniel from UWA IT, and a check 
> of the firewall rules in place, we've decided that it will be better 
> for us to send mail outbound directly from UCC, instead of paying for 
> a commercial relay service.
>
> I've asked for reverse DNS records to be added for the IPs we're 
> planning to use for our mail servers. Once that's complete, we can 
> begin testing and migrating away from using `smtp.uwa.edu.au` as our 
> mail relay host.
>
> I'll let people know when we are ready to start, because we'll need to 
> keep an eye out for any increase in rejections or mail being spam 
> filtered.
>
> Cheers,
>
> James [MPT]
>
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