On 30/08/2024 09:52, Brad Campbell via Dng wrote:
> I upgraded all of my machines and vms to Daedalus earlier in the week. My man outbound mail relay & secondary server had "backports" enabled inadvertently and exim broke in non-obvious ways because I have some custom routers I wrote about 10 years ago.
> When I say non obvious, exim was running but rejecting any mail that relied on these routers. Thankfully as a secondary I just blocked inbound at the firewall until I can fix this mess.
>

With big security caveats, if you need a hack to get your mailserver
quickly back up and running whilst you work through and detaint your
custom rules in slower time, this might be of use:

https://jimbobmcgee.wordpress.com/2020/07/29/de-tainting-exim-configuration-variables/

Nick.