I host my mail server on a VPS.
I suggest making sure you get DMARC / DKIM / SPF working, and having an anti-spam strategy (greylisting helps, but there are a few ASNs that just exist to send spam). Also make sure your IP is not on any public spam list.
The next problem you might face is that Microsoft and especially Google like to make it hard for anyone not using their services. With Microsoft, you fill in a form and jump through some hoops and they’ll start accepting your email enough to land it in spam. Unless you are regularly sending to Microsoft, it is hard to keep them accepting mail, but just sending to a free Hotmail address (owned and occasionally marked as read and deleted by you!) on cron is enough to keep occasional mail deliverable as long as none of your mail ever gets marked as spam. Google can be more of a pain to small email servers in terms of not landing in spam, but I think occasional reports of not spam will help you.
In terms of keeping down spam:
- postgrey or similar for greylisting keeps out the least serious spammers.
- The notorious spammers / bulletproof hosting is best blocked by ASN since they regularly shift IP addresses. Try a script like this on daily cron (assuming you jump to the custom BAD_AS table from your INPUT iptables rule) - please don’t run it too often since routeviews is a free public service and you should be respectful of them:
#!/bin/bash -e
TEMPDIR=$(mktemp -d)
trap 'rm -r "$TEMPDIR"' EXIT
curl https://archive.routeviews.org/oix-route-views/oix-full-snapshot-latest.dat.bz2 -Lo "$TEMPDIR/snapshot.bz2"
bzgrep -e " (15828|213035|400377|399471|210654|46573|211252|62904|135542|132372|36352|209641|7552|36352|12876|53667|138608|150393|60781|138607) i" $TEMPDIR/snapshot.bz2 | cut -d" " -f 3 | sort | uniq > $TEMPDIR/badranges
iptables -N BAD_AS || true
iptables -D INPUT -j BAD_AS || true
iptables -A INPUT -j BAD_AS
iptables -F BAD_AS
for ROUTE in $(cat "$TEMPDIR/badranges"); do
iptables -A BAD_AS -s $ROUTE -j DROP;
done
- Despite Google being so hostile to very infrequent emails from IPs that have years of never sending spam, just because they are small, Gmail and Firebase are one of the most significant spam sources. I find client-side filtering works best for things like that which get through your other defences.
- Another spam source is Docusign. These types of companies tend to shut down individual scammer / spammer accounts, but then allow them back in for the same scam with another account.
Note that of the spam that gets through if you have the basic defences, it’s probably a similar level to big corporate hosted mail, so don’t let this deter you (I just hate spammers).



















Hmm, it seems like it was perhaps not engineered for large numbers of pedestrians, but it still seems like the article is a bit hyperbolic (that said, I’m an Australian and don’t know the area, and am going off things like Google Street View and maps).
It looks like there is a road, “Patterson Plank Road”, that actually has a footpath, and has a speed limit of 40 (presumably miles per hour, so 64 kph - about the same speed as most arterial roads in Australian suburbs), and connects to the local area. Then there is a “Rd A Plaza” that seems to go around the outside of the complex, that has a footpath for most of the way, up until there are vehicle barriers. From that point, there is a wide grass verge that looks relatively well drained, and runs all the way to the start of the car park (which presumably has to be walkable to the actual entrance). It would take crossing a 4 lane road that seems to mainly serve the stadium, and isn’t well engineered for pedestrians (no pedestrian refuge islands or anything) - but people do that all the time in Australia and areas are still considered walkable.
Now if the intent is to make it harder to access on foot specifically so they can increase profits (create a problem for people and then sell them the solution), then it is possible they’ll throw up more obstacles. I think Americans might be much more tolerant of what is called ‘drip pricing’ in Australia (and is illegal), where a low initial price is presented, but then lots of additional unavoidable expenses are presented (see also, some American retailers apparently exclude taxes from pricing, many Amercian hospitality providers underpay waitstaff and then demand that customers pay a ‘tip’ or ‘service fee’ that wasn’t reflected in the menu price, and so on). In Australia, the law that is for sales to consumers, the total price has to be displayed up front at least as prominently as any other price - so unavoidable additional charges from the same (or a related) company wouldn’t fly.