Error Messages's questions

Hi i run a few different linux distributions and architectures and have some from server so slow that they update in KB/s for example with ubuntu on ARM. I'm learning up automation, how would i go about

• creating a local only linux mirror/cache
• updating that mirror/cache regularly automatically
• automating the router to wake up the file server to update that cache and shutting it down when finished
• additionally if possible, update other VMs/devices after the file server updates.

I have access to my router to create static DNS entries as well and i have a file server that consumes a lot of power when turned on but it is very fast (does gzip close to 1GB/s which is the raid's peak performance). It takes more than 200W just keeping it on and no matter what i do cant reduce the wattage to under 100W so i decided to just have it at max performance and only turn it on when i need it.

I bricked one of the ARM boards OS and cant open it up to access the SD card, as one of the ubuntu upgrades went too slow that it timed out and messed up the firmware update as an example. I figured since i use a few distros very often that i might as well have the update process done from a local cache as an exercise to learning ansible.

I would like help in learning how to do this be it here or links to resources in how to do what i'd like.

Hi for protecting my organisation i want to get a full list of email spam blacklists from various lists. mxtoolbox for instance is able to check an ip against many many blacklists, however is it free to download the list from every blacklist?

Not only is using the blacklist important but we have thousands and thousands of IPs owned by us and our customers, i simply cannot find a solution free or paid that that allows checking that many, and instead of choking the internet with API requests i figured it would be a lot more efficient and better to download the lists not only for email filters but to also code to autonomously check against it regularly so that any IP address of ours that appear in it can be caught early for measures to be taken.

So far our email servers regularly get targetted for phishing, scams and as a relay to send spam and our customers also run their own, so it is important to be able to identify compromised servers or customers acting badly as recently we ended up on l3-UCEPROTECT list for the entire range of many thousands of IPs. However we do not get any abuse emails in relation to any of our IPs used for spam, because even though we ignore copyright emails (we arent an endpoint ISP or hosting platform) we do act on abuse emails.

While some blacklist providers make it easy to download their list, there are about 100 blacklists used commonly out there and i would like to know if all of them can provide their lists freely to test against. This is because l3-UCEPROTECT only happens if some IPs are blacklisted on other lists for a while.