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  • 0 posts edited
  • 1 helpful flag
  • 29 votes cast
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?
Sep
30
comment Does a PTR record prove anything about the sender's email domain?
That means I need to have a hostname for .114?
Sep
29
comment Does a PTR record prove anything about the sender's email domain?
But my public IP is .114 while my MX only listen on .115. The receipient server sees the connection coming from .114 (it does, right?) So technically, these 2 IPs can be different mail servers altogether. Doesn't this proves nothing about the authority of the sending mail server? Or do i have to set PTR for both 115 and 114?
Sep
28
comment Does a PTR record prove anything about the sender's email domain?
That's what I don't understand too. In practice, my outgoing and incoming could both be different. Then why would the PTR resolution be any useful to prove that my email address/domain is not a fake one?
Sep
15
comment semicolon in DNS name when nslookup resolving CNAME
This problem is now corrected by someone else who claimed is a group policy issue, but I don't see how. Any idea?
Sep
15
comment semicolon in DNS name when nslookup resolving CNAME
The commands shown in the question are the commands issued. i.e. nslookup <enter> server 192.168.3.2 <enter> computerA <enter>.
Sep
9
comment Very delayed mail delivery. What happened?
I have everything important! I'll check with dh.com.sg and get back.
Jul
20
comment How to set up mailbox in Exchange
@joeqwerty I managed to get postini fixed. Could you kindly add your reply as answer please? Thanks.
Jul
18
comment How to set up mailbox in Exchange
@Handyman5 To answer your questions, I can send email from exhange/outlook 2007 (user@alt-company.com) to gmail.com and other test addresses. I now also realise that the MX may have been set to the postini servers. Any chance you know if I also need to add an entry in Postini?
Jul
18
comment How to set up mailbox in Exchange
No "Exchange Tasks" at all in ADUC. I think it's essentially the same doing on the EMC itself.
Jul
18
comment How to set up mailbox in Exchange
Can I ask how do I do that? You mean just setting the Email Address field in the user object property?
Jul
18
comment How to set up mailbox in Exchange
@Handyman5 on the other hand, if you can tell where to set Exchange to handle alt-company.com, i can check and confirm if it is indeed set correctly.
Jul
18
comment How to set up mailbox in Exchange
@Handyman5 I'm probably dumber than your question. But, we already have existing users who are sending/receiving from alt-company.com. That guy who manages it left the company. Now I am stuck wondering how he did his settings.
Jul
3
comment Does inter-dependence on Optic Fibre WAN connection for MPLS VPN exists?
Does the VPN config in the firewall have anything to do with the MPLS line connected to the 10/100 port? Any difference if the MPLS is connected to the WAN2 and firewall to configure VPN on WAN2?
Jul
1
comment Connecting server to more than one switch
@nedm sorry to user86181... i apologize. I assumed he is a guest user because of the low rep (1) and creative username.
Jun
30
comment Connecting server to more than one switch
Thanks for mentioning bridging. But I prefer to give a tick to a registered user.
Jun
30
comment Connecting server to more than one switch
@robert actually, i don't have a problem except for not knowing if it will work. just trying to explore other network options.