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bio website jakesee.com
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visits member for 4 years
seen Nov 20 at 2:18

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
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
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
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
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
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.
Nov
6
comment Overview of multiple mx server set up
Thanks mailq. The "gathering" I was asking about is the central mailbox or forwarding that you said. But in the former case, where is this central store located normally? Is it on a different server entirely? What if this central store server is down?
Oct
3
comment Does a PTR record prove anything about the sender's email domain?
@ewwhite I had read the AOL page but I still did not think it is any useful with regards to anti-spam by checking if the sending IP has a hostname. That is probably why many ISP still do not allow residential users to set up mail servers at home.
Oct
2
comment Does a PTR record prove anything about the sender's email domain?
Want to say a big thank you to all who spent time posting answers and comments at length to help me. I would give more up votes if I could. Thanks.
Oct
2
comment Does a PTR record prove anything about the sender's email domain?
@TomTom I know I just have to do it. But I am still not convinced of the value of checking the PTR!! Must be missing some important link.
Oct
2
comment Does a PTR record prove anything about the sender's email domain?
Which incidentlaly is the job of SPF. So why doesnt it simply just check the SPF for gmail.com and ignore the PTR altogether?
Oct
2
comment Does a PTR record prove anything about the sender's email domain?
specifically in my case, whatismyip.com tells me my IP is x.y.z.114 but my MX is "mail.domain.com IN A x.y.z.115". So I can set up an honest PTR for x.y.z.114 but it doesn't say anything about my MTA.
Oct
2
comment Does a PTR record prove anything about the sender's email domain?
Sorry, I think I am too dumb to understand. So what even if the forward and reverse DNS matches? It doesn't say anything about the sender or the sending MTA. I can set up mydomain.com A w.x.y.z and w.x.y.z PTR mydomain.com, they match and I can still send my email as me@another.com.
Oct
2
comment Does a PTR record prove anything about the sender's email domain?
But I can choose not to lie about my PTR and still format FROM as me@gmail.com. It doesn't stop me from sending as me@gmail.com does it?
Oct
1
comment Is it alright to turn off firewall in a LAN using Group Policy?
I asked because I disagree with our new IT manager turning off the firewall completely for no apparent reason i can think of. The top reason I want it turned on is that he doesn't work in my office, he is from HQ in another country, so if anything goes wrong, it's my butt.
Oct
1
comment Is it alright to turn off firewall in a LAN using Group Policy?
@Massimo may i ask what are some of your applications that require ports to open on clients that make the firewall a pain?