Configuring multiple domains and subdomains. DNS & Nginx issues abound!

What I’m shooting for:

• domain1.com > /home/user/www/domain1
• domain2.com > /home/user/www/domain2
• sub1.domain2.com > /home/user/www/sub1
• sub2.domain2.com > /home/user/www/sub2
• drop.let.ip.address > /home/user/www/domain1

What is happening:

• Navigating to drop.let.ip.address redirects to domain2
• Navigating to domain1 redirects to domain2
• Navigating to domain2 fails to resolve host
• Navigating to sub1 does not redirect, but fails to resolve host
• Navigating to sub2 does not redirect, but fails to resolve host

ZONE file for domain1:

$TTL	1800
@		IN	SOA	NS1.DIGITALOCEAN.COM.	hostmaster.domain1.com. (
			1414393689 ; last update: 2014-10-27 07:08:09 UTC
			3600 ; refresh
			900 ; retry
			1209600 ; expire
			1800 ; ttl
			)
             IN      NS      NS1.DIGITALOCEAN.COM.
                     NS      NS2.DIGITALOCEAN.COM.
                     NS      NS3.DIGITALOCEAN.COM.
@	IN A	 drop.let.ip.address

ZONE file for domain2:

$TTL	1800
@		IN	SOA	NS1.DIGITALOCEAN.COM.	hostmaster.domain2.com. (
			1414403298 ; last update: 2014-10-27 09:48:18 UTC
			3600 ; refresh
			900 ; retry
			1209600 ; expire
			1800 ; ttl
			)
             IN      NS      NS1.DIGITALOCEAN.COM.
                     NS      NS2.DIGITALOCEAN.COM.
                     NS      NS3.DIGITALOCEAN.COM.
@	IN A	 drop.let.ip.address
*.sub1 IN A drop.let.ip.address
*.sub2 IN A drop.let.ip.address

Server blocks for domain1:

server {  
    server_name  domain1.com;  
    rewrite ^(.*) http://www.domain1.com$1 permanent;  
}  
  
server {  
        listen 80 default_server;  
        listen [::]:80 default_server ipv6only=on;  
  
        root /home/user/www/domain1;  
        index index.php index.html index.htm;  
  
        server_name www.domain1.com;  
  
        include hhvm.conf;  
  
} 

Server blocks for domain2:

server {
    server_name  domain2.com;
    rewrite ^(.*) http://www.domain2.com$1 permanent;
}       
        
server {
        listen 80;
        listen [::]:80;

        root /home/user/www/sub1;
        index index.html index.htm index.php;
        
        server_name sub1.domain2.com;
 
        include hhvm.conf;
} 
 
server {
        listen 80;
        listen [::]:80;

        root /home/user/www/sub2;
        index index.html index.htm index.php;

        server_name sub2.domain2.com;

        include hhvm.conf;
}

server {
        listen 80;
        listen [::]:80;

        root /home/sub/www/domain2;
        index index.html index.htm index.php;

        server_name www.domain2.com;

        include hhvm.conf;
}

I’ve been pulling my hair out all day, and I’m pretty sure the reason it’s so hard to google is because it’s a simple DNS issue and I have no idea what i’m doing with DNS.

Any help would be greatly appreciated.