EC2 Mail/Web Server Requirements For Reverse DNS Using EIP and Route 53 DNS Hosted Zone? I have a singe AWS EIP and Hosted Zone setup with Route 53 for my domain. Given the following Example:
Reverse Proxy. Whereas deploying a load balancer makes sense only when you have multiple servers, it often makes sense to deploy a reverse proxy even with just one web server or application server. You can think of the reverse proxy as a website’s “public face.” Jul 08, 2009 · The public IP addresses used by EC2 belong to Amazon, and the DNS lookups for these addresses will therefore look in Amazon’s DNS records. Amazon does not have PTR records pointing to your mailserver’s FQDN in their DNS, so the reverse DNS lookup fails at step 2, and your email message is not delivered. The public IP addresses used by EC2 belong to Amazon, and the DNS lookups for these addresses will therefore look in Amazon's DNS records. Amazon does not have PTR records pointing to your mailserver's FQDN in their DNS, so the reverse DNS lookup fails at step 2, and your email message is not delivered. However, you will also need a reverse DNS record, which only Amazon can set up for you. For more details, see this post: How to set up a mail server on AWS EC2 using open source software. Decide how to handle the IPv4 scarcity. Make sure that the IP address(es) in your A record have been assigned to the host that is running your web server.
Jul 08, 2009 · The public IP addresses used by EC2 belong to Amazon, and the DNS lookups for these addresses will therefore look in Amazon’s DNS records. Amazon does not have PTR records pointing to your mailserver’s FQDN in their DNS, so the reverse DNS lookup fails at step 2, and your email message is not delivered.
__meta_ec2_public_dns_name: the public DNS name of the instance, if available __meta_ec2_public_ip: the public IP address of the instance, if available __meta_ec2_subnet_id: comma separated list of subnets IDs in which the instance is running, if available __meta_ec2_tag_
2 days ago · An Amazon-provided private (internal) DNS hostname resolves to the private IPv4 address of the instance, and takes the form ip-private-ipv4-address.ec2.internal for the us-east-1 Region, and ip-private-ipv4-address.region.compute.internal for other Regions (where private-ipv4-address is the reverse lookup IP address). You can use the private
2 days ago · An Amazon-provided private (internal) DNS hostname resolves to the private IPv4 address of the instance, and takes the form ip-private-ipv4-address.ec2.internal for the us-east-1 Region, and ip-private-ipv4-address.region.compute.internal for other Regions (where private-ipv4-address is the reverse lookup IP address). You can use the private email - AWS EC2 Reverse DNS (PTR) Failing - Stack Overflow 2020-6-15 · I gave them the ip of my ec2 mail server, and put "mail.mydomain.com" in the "Reverse DNS Record for EIP 1" box. However, I keep receiving emails back from them saying: When attempting to map the reverse DNS entry, we notice that this is failing because the PTR record doesn't match the A …