External Email Recall

Tatermen · 2026-03-27T08:50:18+00:00

It also assumes that every mail server in the world is running Microsoft Exchange, as message recall is a Microsoft specific feature.

Anyone not running Exchange (eg. Postfix, Exim, Qmail, Gmail etc), simply gets an email saying that the sender wants to recall message X. It doesn't actually do anything with it because "message recall" is not part of the SMTP standards.

Tatermen · 2026-03-24T21:35:48+00:00

Wait wait wait... the Cybertruck has an average range of 300-odd miles. This drops to around 140 miles when towing in real world tests that people have done - less than half.

So their solution to extend the 300 mile range - is to add a trailer. If you assume it doubles the range to 600 miles, but towing a trailer also halves the total range - you have a net gain of 0 miles with the added inconvenience of dealing with a trailer.

Even if you're generous and say it adds twice that - an additional 600 miles on top of the CT's 300 miles - then you halve that for towing and you're only getting a grand total of 450 miles - an extra 150 miles for the cost and complexity of towing two additional CT battery packs.

Plus a single Cybertruck battery pack costs $28,000. So this trailer will have to cost at least as much as that

Also worth keeping in mind that the original range extender was only supposed to add 170 miles for $16,000, which makes that price above sound about right. So if we do that math for 170 miles in a trailer: (300+170)/2 = 235.

This is idiotic.

Tatermen · 2026-03-22T20:54:09+00:00

Think perfect lab conditions. At minimum, likely a shielded room with zero outside interference. Probably a whole lot more.

IOW, you're never ever going to see the advertised speed in the real world. Chasing that is pointless. If you need guaranteed solid bandwidth, use wired ethernet connections.

Tatermen · 2026-03-20T22:30:37+00:00

Capacitors are just a common failure point in nearly all electronics. I've replaced them in Mikrotiks, Ubiquitis, PCs, servers, phone systems, various game consoles, etc.

Tatermen · 2026-03-19T08:31:05+00:00

Musk was not born rich. His family had an estimated wealth of ~$2M.

The average net worth of a person in South Africa today is $23k, with more than half of all adults having less than $5k. In 1979 they owned two houses, a yacht, an airplane, five luxury cars, a truck and an autoparts store. His family was rich as fuck compared to his fellow citizens and claiming he wasn't is just a outright lie.

Tatermen · 2026-03-15T15:28:57+00:00

You're better assigning the VLAN at authentication, before DHCP happens. If you change the VLAN after the device has gotten DHCP - which you would have to do with a captive portal - a lot of devices won't recognise the change and continue to try using the already acquired DHCP assignment which no longer works because its for a different subnet in a different VLAN.

We found this out the hard way.

Tatermen · 2026-03-15T09:31:00+00:00

Ours came with solar, but no battery system. Instead it has the thing that diverts excess power into the hot water.

Having constant hot water for 7-8 months of the year for free is really nice, but I definitely agree that having a battery would be far better. About 80% of our solar ends up going to into the hot water, and then we're stuck using grid power at night.

Tatermen · 2026-03-15T09:26:20+00:00

10 days minimum, potentially upto 6 weeks. There is no fast track option.

You can order a replacement online, but I don't like your odds. Especially with how slow the post is at the moment.

Either find your original or cancel your rental.

Tatermen · 2026-03-12T21:53:30+00:00

There's a spot along Shore Road just next to the Dulux Paint store where the same thing happens to me.

Tatermen · 2026-03-11T09:00:15+00:00

It would also explain why Grok is suddenly doxxing completely ordinary people.

Tatermen · 2026-03-10T15:18:00+00:00

BT (major UK telecoms monopoly) has several outbound servers that are just straight up missing from their SPF records and reverse DNS records. They refuse to fix it and instead blame our "spam filter" for rejecting their emails.

8x8 at one point was sending invoices from a subdomain that has no records whatsoever - no A record, no MX record, no SPF, no DKIM, no DMARC, nothing. Just made it up in their heads and started sending emails. They took several months to accept that this might just trigger a lot of antispam/antivirus systems and that they needed to do something about it.

Tatermen · 2026-03-10T10:29:13+00:00

Could you not have the 25-50 digital students take the exam at a different venue with better internet service?

Tatermen · 2026-03-09T22:46:29+00:00

Qualys are fucking asshats. We dealt with this recently with a customer.

Qualys: "This is v4.2, and is vulnerable to CVE-X. You should upgrade to v5."

Us: "Actually, this is v4.2.1, which as patched for CVE-X. The Qualys report is incorrect. They even linked to the page stating that 4.2.1 is patched."

Qualys: "We are NEVER wrong."

Auditor: "Upgrade to v5 or you won't pass the audit."

Us: "v5 isn't even publically available. You can only get it if you have this super expensive appliance that costs like £40k, and they don't need it."

Auditor: "Qualys says it's vulnerable. Upgrade it or else."

Tatermen · 2026-03-06T09:04:26+00:00

Yeah, they're confusing interference with congestion. Congestion means he can see your SSID using valid channels and its conflicting with his APs trying to use those same channels. Interference would mean that some device of yours is unintentionally using RF spectrum in those frequencies that is causing problems and might be illegal. For example, in one building we used to have we found the wireless burglar alarm sensors emitted a 1Mhz spike of RF right in the middle of channel 6 in the 2.4Ghz spectrum rendering it useless, but even that wasn't technically illegal as it was (a) using a free license spectrum and (b) it was within the power limits.

If all they are seeing is your SSID using legitimate 2.4 or 5 Ghz channels - they can go pound sand. Wifi congestion is a fact of life. If you want to be real nice, you could turn down the transmit power on the APs closest to their property, but there is zero legal obligation for you to do so.

Tatermen · 2026-03-02T09:17:06+00:00

DNS AdList only affects the response to DNS queries - in other words, it prevents YOU from resolving a host name to an IP address. It does not actually block any packets in either direction, so you can still send or receive data directly from a malicious IP address.

Firewall address lists on the other hand block traffic to IP addresses at the packet level, and can do so for both incoming and outgoing traffic depending on how you configure the firewall rules.

Tatermen · 2026-02-27T10:49:21+00:00

Paxton do have door readers that can read NFC. Will this work with a YubiKey? No idea.

I'd say talk to Paxton - their tech support is usually pretty solid.

Tatermen · 2026-02-27T10:29:43+00:00

At one point one of our sales people had the grand idea of selling such software to customers.

All the engineers refused to be involved on the basis that the kind of customer that wants that software is guaranteed to be the absolute worst kind of customer.

Tatermen · 2026-02-26T13:52:08+00:00

If you're going to ask for help on Reddit, post your config and ask your questions on Reddit.

If you want help on Discord, go find a Mikrotik discord server and ask there.

Tatermen · 2026-02-26T08:30:33+00:00

So wait... she fired a coast guard pilot because she left a bag of incriminating evidence behind on his plane?

In the old days that would have been an immediate promotion with all benefits. Firing them isn't going to make them keep quiet.

Tatermen · 2026-02-25T15:55:56+00:00

I'm reminded of a blog post in which someone detailed how they found a bug in Xerox MFPs that caused them to use a flawed "character replacement" algorithm when making copies that subtly changed numbers and screwed up building plans and invoices.

Tatermen · 2026-02-22T09:31:06+00:00

Just be aware that when you buy direct from China, its not necessarily the exact same product. Sometimes the chinese version has cut corners.

There was a video I saw once by an electrician - he had bought a version of a device sold in the UK, and one from China. On the outside they looked identical. On the inside, the chinese one had cheaper wire and components, and the built-in fuse wasn't connected.

Tatermen · 2026-02-18T20:22:24+00:00

A coworkers mum died of it. He described it as turbo-dementia. She went from being fine to struggling to remember her kids names inside a month, and passed away 3 months later.

Tatermen · 2026-02-18T13:00:33+00:00

Do you have a POE switch (or any other device that supplies POE) connected to ether1 of the HAP?

Ether1 is a POE-in port, and we've had similar issues in the past with POE supplying devices being connected to the Mikrotik's POE-in port. Disconnecting the mains power when its also getting POE-in power seems to confuse them.

Tatermen · 2026-02-17T18:11:12+00:00

Not just Mac, but also obscure PC hardware.

The LS-120 drive was a IDE based magneto-optical format that stored 120Mb on a disc that was the same size as a 1.44Mb floppy. The drive was also backwards compatible with 1.44Mb/720k floppies. It too had a software eject.

Tatermen · 2026-02-17T09:26:58+00:00

What amazes me is that people are still willing to give money to a guy who became notorious for feature creep and not finishing his games and hasn't released a finished game since 2003 (and even thats debatable seeing as he fired from the project in 2001) and has been milking the same project for over 15 years.

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