Nik schaad

How?! I'd expect it to be completely fried after that

https://pcpartpicker.com/list/v9WxbK - $550
https://pcpartpicker.com/list/MLDBhk - $525

What kind of games do you play, and do you do anything else performance-intensive with your PC?
 
If you play a lot of high-FPS competitive shooters or do a lot of video editing/3D modeling/code compiling/other productivity tasks, the CPU upgrade probably will be better. (Although I'd avoid the Q300L for its poor airflow performance, and choose a lower-wattage PSU with better internals instead of a 750W white.) If you play a lot of sightseeing games at high resolutions/settings, the GPU upgrade will help you more, although I don't know how well your current PSU would handle it.

Yah, hope I didn't come off too harsh at first.
Don't hesitate to ask more questions either as they come up because they will but I hope that at least gives you some general direction to start going in.

thank you so much this will help me greatly

Ok, that's a bit more level headed, I'm more used to people just wanting to print money because someone else does it kind of thing, lol. So if you're not planning to jump into the deep end then that's much easier to help you with 🙂
For tunnels it depends on what ExtraIP supports but doing some research you'll need to setup a GRE tunnel at minimum. You could setup a VM to act as the tunnel on your side and have it form a tunnel with ExtraIP. The biggest issue with all of this is there isn't a single guide for it, there are thousands which vary depending on what you use as the tunnel endpoint.
Mapping is basically using PAT(many:1) instead of NAT (1:1) to host multiple machines behind a single IP. Basically how your home internet allows multiple things to connect behind a single public IP. PAT in this case would be 1 machine to 1 IP on a specific port or range of ports they can use. Again though this is a million ways to set up kind of deal but all depends on how ExtraIP has their stuff setup.
 
Topics to research:
PAT/NAT
GRE Tunnels
IP logging/security (probably a bit broad but at least start with logging)
 
General resources:
cisco.com
juniper.com
stackoverflow.com
google.com

it is currently indeed a project for friends as I still need to learn (basically) everything about networking. If you could refer me to websites where I can learn these things I'd ne very grateful

You wouldn't have them access by ip but give them a name like server1.domain.com, that way you can have more than 5.
Then this depends on what equipment you got from your provider, how it's set up and what it'll let you do, and we don't have that information. But for home stuff you'll typically have a modem/gateway that will give one of those IPs via DHCP to any of the first 5 clients connected directly to it and that's it. You probably want to disable DHCP on it if you can, connect your VM host to it, give it one of the IPs manually, then set the VMs as bridged and give them the others maually as well.
 
And yes, the above, although I imagine this is for friends and hosted locally, not random customers.

Im aware of all of those problems, this is a long term idea and all that im currently looking for is a few links and references as to how I can tunnel the ip's from extraip to my servers. I want to figure out how it all works and how I can do it before I start to worry about the next part (s). Do you by any chance know how I can tunnel them. Idk what ip mapping is, as I said im still learning. Do you have any links where I can learn these things?

Theoretically this would be the setup:
A switch with 5x1Gbit ports 1 occupied with the router through a cat 8 cable. If I were to plug the other 4 ports with devices, would they all get 1Gbit/s? Or end up divided into 1000 / 4 = 250Mbit/s for each device, lemme know please!

Yeah, as long as you have the IP you basically can ftp to any devices.

Mail is a hard problem and I've run my own server as well for decades. But anymore it's just a spam box or useful for having disposable aliases on the fly.. actually supporting users or having to rely on it is potentially possible.. but I wouldn't ever want that job. It's a lot of work and no money being a free admin.

Maybe I should retire it and move the domain off to a mail host provider but.. eh..

Sorry, I misinterpreted your post as asking about serving multiple domains from one server but you want to run multiple mail servers from a single IP. It may be possible, though I don't have experience doing it so I can't offer tested configuration details.
 
DNS: The MX record for all domains would need to point to your public IP. Also, set up "mail.domain" for each domain to point to your public IP too.
 
Receiving: MX records do not contain port numbers so you can only accept mail on the standard ports which of course can only be forwarded to one VM. You'd need to configure your existing Postfix to accept all domains' mail and then forward to the other VMs via their private IPs where their Postfix instances would accept it. This aspect of it is the least familiar to me but email is meant to hop between servers so I'd be surprised if it couldn't be done.
 
Check out Postfix email firewall/gateway, specifically these lines:
12 transport_maps = hash:/etc/postfix/transport ... 19 /etc/postfix/transport: 20 example.com smtp:[inside-gateway.example.com] The description says "Route mail for example.com to the inside gateway machine. The [] forces Postfix to do no MX lookup."
I think that will solve the forwarding-to-internal-VM problem.
 
Sending: This will be fairly straightforward as it'd be handled by your VM and you'd just need to add the other domains as valid relays to your Postfix's relay_recipients config file.
 
IMAP: This can be accomplished by allocating each domain its own port to forward at the router. Yours would be on 143, the next VM might be 144, then 145, etc. Each would forward to port 143 on their respective VM. You'd have to tell each user which port their domain's IMAP is running on so they can configure their mail client with "mail.mydomain.com:145", for instance.
 
One of the great things about email is that its infrastructure consists of many distinct pieces and they are all meant to handle complex configurations. I'm sure you can get this working.

It can be done and takes at minimum two things: (1) their domains' MX records need to point to your server and (2) your server needs to be configured to accept mail for their accounts. The actual configurations will depend on the software you're running (Postfix, Dovecot, etc).
 
These days a well-behaved mail server also requires proper configuration of SPF, DKIM, and DMARC. Speaking of spam, your VPS may be on a spam list so be sure to check that too. I run an email server within DigitalOcean and large parts of their network are listed in the UCEPROTECTL2 spam list, including a range that my server is in. This means that mail providers who reject based on that list (Microsoft, for one) will refuse to accept mail from my server. There is nothing I can do about this other than to move my server.
 
As someone who has run my own mail server for over 20 years and hosted others on it at times, consider that hosting mail for others may become a larger task than it appears. Running your own mail server is one thing, but when others start to depend on it then you become their admin and after-hours tech support too. Any issues that may occur on the server which you may deem non-critical may be mission-critical to them. Data loss becomes a relationship loss. Be sure that both you and they agree on expectations up-front. You might find that pointing them towards a Zoho or Migadu or Fastmail or ProtonMail or similar provider is better for your mental and relationship health.
 
Useful mail admin tools at mxToolbox: Blacklist check; DMARC check; MX lookup
 

The term Virtual Host refers to the practice of running more than one web site (such as company1.example.com and company2.example.com) on a single machine. Virtual hosts can be "IP-based", meaning that you have a different IP address for every web site, or "name-based", meaning that you have multiple names running on each IP address. The fact that they are running on the same physical server is not apparent to the end user.
Apache was one of the first servers to support IP-based virtual hosts right out of the box. Versions 1.1 and later of Apache support both IP-based and name-based virtual hosts (vhosts). The latter variant of virtual hosts is sometimes also called host-based or non-IP virtual hosts.

That's precisely what the reverse proxy would do.
You get a domain, you make different hosts at your domain provider that are e.g. mc1.yourdomain, mc2.yourdomain etc.
The reverse proxy is configured so that if whoever tries to connect gave mc1.yourdomain:25565 then that is redirected to port X, if they gave mc2.yourdomain:25565 it's redirected to port Y. You have to configure your different servers run on port X and Y internally.

What you're looking for is a reverse proxy. Common webservers like nginx can be configured to provide that and redirect traffic internally to a different machine/port based on the address given.
 
 

I'd use a VM as the openVPN server, so you can take snapshots before any major changes (making it easy to revert if you bork something). 

You would need to implement your own OAuth provider. There is plenty of resources for a variety of languages, I cannot recommend anything specific. Good luck!

Aaaahhhhhh this one's difficult to explain... I've had this same problem before.
First, make sure Page-File in enabled, but only give it 1GB (1024MB) of HDD space.
Second, see if any RAM is being dedicated to your GPU or integrated graphics. Older systems typically do that by default, but poorly configured operating systems can make it even worse. If any RAM is dedicated as graphics memory, reduce the amount it uses.

Since I do not know your html, I could tell you that your css looks extremely specific in terms of displays, positioning, and height/width.
I havent done CSS in a little bit. But no worries, I've got a useless certification in it lol.
I find it fun learning hands on, so I would highly recommend you play around with the following:
Make sure you know your CSS Grid Layout Understand the different display values Understand the different position values (Absolute positioning is absolute, meaning it will stay where it is defined. Relative is relative to other items around it, depending on the display values (there are other positions, but these are the starting two)) you can use percentages(%) instead of pixels(px) for height/width (not always useful, but it may come in handy) after knowing the css grid layout, try changing display to flex (but if you are confused in any way about other things I've said, just forget this bullet point, you'll eventually come across it) I may be a bit confusing, but w3schools and other documentation sites are really helpful.

Oke so i have 16GB DDR3 now 1333mhz (shush dont give me upgrade options i know that i should upgrade but im broke so shush)
It's installed dual channel 2x8 on an ms-7728 ver 2 motherboard with an i7-2600
But for some reason when it reaches 60% usage it starts going to virtual memory and if theres no virtual memory available and i try to open a chrome tab it says no memory available,
and whhen i open task manager it just says "close some programs to free up memory" while its at 50% usage....
 
i dont have any screenshots right now and if you want me to run Command lines then you'll have to send me the commands

Thanks alot! and yes i know that its barely enough thats why i want an upgrade and i know that i have an extra slot just needed info about benefits Thanks dude!

As long as you know your laptop supports more ram and you have a slot open on your motherboard, I'd recommend the upgrade. 4GB of ram is barely enough to do anything anymore, another 4 would probably help a lot. 
 
edit: one reason for upgrading would be multitasking. 8gbs would make it so you can have multiple tasks running without your laptop freezing up or acting slow. (Although if it does, it s because of the CPU)