485 reputation
621
bio website jakesee.com
location Singapore, Singapore
age
visits member for 3 years, 8 months
seen Jul 7 at 14:55

Thinking


Dec
2
asked Ways to estimate which network destination result is shorter/faster network path?
Dec
2
comment What is the IP of mail server behind firewall
Although the other two answers are slightly different from yours, I think you are right. Thanks.
Dec
2
accepted What is the IP of mail server behind firewall
Dec
2
comment What is the IP of mail server behind firewall
I just checked my NETGEAR ProSafe VPN Firewall FVX538 for outbound connections. I am surprised to see outbound NAT, something which I never came across myself. So now i see it is possible to send outbound connections on one host and receive inbound connection on another host behind the firewall, all appearing as a single IP to the remote server.
Dec
2
revised What is the IP of mail server behind firewall
edited title
Dec
1
comment What is the IP of mail server behind firewall
@anzenketh edited my question.
Dec
1
comment What is the IP of mail server behind firewall
I know the firewall will do the NAT, I am just confused which IP is "public" to set PTR for. My ISP probably sets the whole range of IP dedicated to me already and each domain returned by the PTR query can be subsequently resolve to the respective IP. I am just curious and confused as to which IP (refer to qoute) will the receiving server query for the PTR in the first place. (please see edit)
Dec
1
revised What is the IP of mail server behind firewall
added 632 characters in body
Dec
1
asked What is the IP of mail server behind firewall
Dec
1
comment How should I set up my PTR Record?
Do I need to do anything i.e. set PTR records at my own zone in exmaple.com? Or the ISP providing the dedicated IP will handle it?
Dec
1
comment How should I set up my PTR Record?
@Henry Wrinkle Were you are to set this up? what galador might be saying is that the PTR is not set at the DNS zone for example.com, but rather at your ISP's zone.
Dec
1
comment How should I set up my PTR Record?
Is there a diagram for this? This thing is really confusing everywhere I read.
Nov
30
comment Free Windows server anti-virus and firewall programs?
Sorry! but I couldn't help it. that's 5 steps. 5 helpful steps. =)
Nov
22
accepted Difference between multiple NS and NS having multiple A
Nov
20
revised Difference between multiple NS and NS having multiple A
edited tags
Nov
20
asked Difference between multiple NS and NS having multiple A
Nov
15
awarded  Yearling
Nov
7
comment Overview of multiple mx server set up
Thanks! I wish I could up vote more! Appreciate that you understood my question eventhough it could have been badly formed due to my lack of knowledge. e.g. existing infrastructure does not "gather" or "pull", but rather MTAs "forward" or "push" emails to MDA. That's why it was put in qoutes from onstart.
Nov
7
accepted Overview of multiple mx server set up
Nov
7
comment Overview of multiple mx server set up
Sorry if I wasn't clear but BillThor got exactly what I needed. I wasn't trying to discuss, because I am not good enough, I was just hoping you can tell me how it work. For example bill confirms "... as pop is the MDA and has the email to be read, it must be up when you want to read email..." cos' there's a lot of talk about multiple mx but very few multiple pop so I wasn't sure if I understood the situation correctly. that's why I asked.