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We need to have a PTR record created for our email server. What are the appropriate steps to ...
We need to have a PTR record created for our email server. What are the appropriate steps to get this done?
...you. Please private message me your account number, the name of your business, the static IP address...
Hi Damion and welcome to the business support forums.
I can make the DNS request for you. Please private message me your account number, the name of your business, the static IP address and the name service it should be pointing to.
Hi, Im not sure if I am sending this to the correct group/location? Who would I speak to ...
Im not sure if I am sending this to the correct group/location?
Who would I speak to about getting PTR Records setup for my static IP's /29 ?
Works great, thanks much. Sorry for the delayed response.
Hello Metorra, Please send me a private message with your account number and...
Please send me a private message with your account number and requested entry.
I reset my modem because I'd forgotten the password. Now it's pulling down something other th...
I reset my modem because I'd forgotten the password. Now it's pulling down something other than my account's static IP. Can this be set correctly for me? What do I need to do?
Hello cmchittom and welcome to the support forums.
I can certainly assist with your static IP. Please private message me your account number and the name of your business.
Glad you got this addressed. I'll have that marked off right away. Please let me know if you need a...
Glad you got this addressed. I'll have that marked off right away. Please let me know if you need anything.
On 9/12/17 we experienced a strange issue with our Comcast Business service with Static IP, which w...
On 9/12/17 we experienced a strange issue with our Comcast Business service with Static IP, which we have had for years. We have multiple servers in house hosting our business DB and a website with 30 employees and other external users and use a SonicWall firewall with VPN. Initially we were experiencing some major fluctuations in our Internet speed. I called Comcast and the tech (Edward) said his information showed that our modem has been up for 52-days and recommended we reset it. He recommended powering it down for 10-seconds and then powering it back up. We have done this before during business hours and it only temporarily interrupted our Internet connectivity, so we were okay to do it again. With Edward on the phone we powered down the Comcast modem and 10 seconds later powered it back up. This time we lost all inbound and outbound connectivity. Of course, Comcast (Edward) said everything was fine on their end. I had to end the call so I could figure out what was going on. We power cycled all of our switches, including our SonicWall appliance, with no luck. I eventually plugged directly into the Comcast modem and tried to access the gateway we were using and was unable to. I then changed my setting to DHCP on my laptop and got connectivity. I checked the gateway and it was totally different from what we were using. I then temporarily changed our SonicWall appliance to DHCP for outbound connectivity. The disruption lasted for an hour. I called Comcast (Carol) and once again was told everything was fine on their end. I told her what our Static IP was and she said it did not match with what they have on file. She emailed me what Comcast shows as our static IP information, which was totally different from what we have been using for everything. Meanwhile, our Comcast modem is 7-years old. Early on I questioned whether or not we should replace it. Comcast (Carol) said I could take it to one of there customer centers and replace it. I told her we are a business and can't just close down for a few hours to do this - amazing!
How the static IP address that we have been using for years suddenly changed - no one will say. Very disappointed.
...would like to review your gateway and static IP. Please private message me your account number...
Hi Rx and welcome to the support forums.
I am sorry to hear about your experience. I would like to review your gateway and static IP. Please private message me your account number, your business name, your previous static IP address and the new one you have now.
Thanks, Phil. I ended up calling in to the support line last night, and got squared away in a...
Thanks, Phil. I ended up calling in to the support line last night, and got squared away in a few minutes. Mark this one off your list.
I use google domains for all my servers and services. I would like to run a small webserver from ho...
I use google domains for all my servers and services. I would like to run a small webserver from home, so i wouldn't like to purchase a static IP. I want to setup dyndns, well, google domains does support this quite well, and i thought that our gateway would as well, but i was mistaken. Google Domains uses the dyndns2 protocol, but the comcast gateway doesn't allow for the user to input a custom service name for the dynamic dns feature it provides.
I would like to be using the gateway to update my dns, rather than a computer that continually pings my external IP.
it would be less than trivial to add a domains.google.com service provider in the gateway firmware...
The best solution is to install a dynamic DNS updater that speaks dyndns2 protocol on your "small w...
The best solution is to install a dynamic DNS updater that speaks dyndns2 protocol on your "small web server". A good updater does not continually ping your external IP, but rather does an appropriate check at reasonable intervals and at startup. Google help is available at https://support.google.com/domains/answer/6147083?hl=en
Need help in setting up a small Office Network with a Domain Controller. I would like to s...
Need help in setting up a small Office Network with a Domain Controller.
I would like to setup a small office network with the following:
1. Domain Controller managing about 10 to 12 workstations
2. Wireless Network
3. Print and File Services
Is there a setup or user guide available?
Yes, Comcast's responsibility technically ends at the Comcast gateway; any devices past that, they ...
Yes, Comcast's responsibility technically ends at the Comcast gateway; any devices past that, they are not authorized to provide support for.
But I am, so let's dig in
First off, if you are using the server to provide DHCP (and you are in this case), you will need to disable DHCP on the Comcast gateway.
Can you possibly detail your network topology (any routers and their associated IP addresses/subnets, the server's location on the network & its associated IP address/subnet). As well, can you post the output of "ipconfig /all" from a workstation that has obtained an IP address via the WIndows DHCP server?
Timd; Thanks for the sharing of the educational materials. I spent yesterday watching video's...
Timd; Thanks for the sharing of the educational materials. I spent yesterday watching video's on Lynda.com by a gentleman by the name of Mark Jacob. The ipv4, ipv6, subnet masking, and the actual math behind this all really helped me greatly. Some of the "vague references" supplied by others were explained. I did purchase a couple of books albeit not highly technical in nature, and the IP addressing is considered "outside the scope of the book (i.e. topic). I was dumbfounded by that since it's the inroad to the system. But it is what it is. Being that Eli's video's on the topic are 2010 - 2011, he really didn't even touch on ipv6 other than he's been hearing about it since 1999 when he got involved in computers.
I've been involved with forums (not Servervault) in my main line of work. However, I stay back and let the people attack each other by use of sarcasm, terse one line comments, and literally making a person feel like an idiot for even posting a question, comment, or concern. I'm also aware that the IT industry has some very highly skilled, educated, and professional people that should not be giving their knowlege away for free. Hey, not an issue with me as I'd pay for the information I need. I'd be happy to give the list of what I have, what I'd like to do, and fill in the information on all the devices. If I could learn by reverse engineering or if the person doing the configuration would at least tell me why, I'd appreciate that as well. I'm not messing with anyones' job security but I am a Scientist, and not knowing anything at all, drives me nuts. Not to mention, I do enjoy technology as well.
If you'd like to chat more off this site, you can email me at trisATgoisesDOTcom. Replacing the usual AT and DOT with the correct characters. I don't want to impose on the fine folks that run these forums and their helping nature.
I've OBVIOUSLY high-jacked this thread and ALSO cross-posted with my IPv6 dilemma. So here...
I've OBVIOUSLY high-jacked this thread and ALSO cross-posted with my IPv6 dilemma.
So here on out, anyone interested in what I got going here, here is a seperate thread with my IPv6 problem:
Thank you both train_wreck and ShifterKartRacer for the awesome detailed help! Sorry OP! Your post is very similar to my scenario..but the IPv6 has made it more complex.....I honestly didn't mean to step on your toes... : )
Hi, It seems to be that some of us are in this same position of setting up a new server.&n...
It seems to be that some of us are in this same position of setting up a new server. I read this post, and I'm not trying to hijack this thread but I could sure use the help. I just received a new Comcast Cisco modem a couple of hours ago which replaced our approximate 10 year old SMC.
My only diference is with the Domain Controller. At this particular time, I'm more comfortable having the DHCP issues left with the Comcast unit. I'm also running the Windows Server 2012 R2 Essentials product suggested by train_wreck. I'm also not "under the gun" to have the entire system up and running since I've got my approximate 10 coworkers setup running Office 365 with Microsoft handling the Exchange server duties. I've also established a relationship with a cloud storage provider (Egnyte) who is handling our "shared file" duties. Our PC's are running an Egnyte sych client in real time that works for the most part pretty good. I've created a workgroup in Win 7 and we share files that should not be in "the cloud" off of our Office Managers PC. I recently down sized our company at which time I just couldn't afford the Data Suite Citrix Solution with 4 servers (I believe that's what we had), an Exchange server, and all the other IT Company costs.
My main issue is that I can't grasp the DHCP, DNS, the IP Suite of protocols, Private IP, Public IP, Subnet Masking, Port Forwarding, Gateways, and associated items. I've studied, watched, read, etc... and I'm becoming more familiar but it's not going to happen overnight. What our company needs is really:
1. Remote Access (Anywhere Access). We work at our clients sites 75% of the time. I also have some coworkers that may be gone for 1 week at a time. Our end product is really just reports (Word and PDF), spreadsheets, Publisher documents, and a few others. My issue with this has been the uPnp or lack thereof with the SMC modem. Also, would Anywhere Access be best accomplished using a VPN? We do have 1 static IP address and really it doesn't look like we really need it????? What is it used for.
The other issues such as shared printing (we have two large capacity multi-function copier/printer/scanners, and file storage are not as baffling to me. what I am most concerned (I should say SCARED) about is setting up the Comcast unit incorrectly, having the network go down, or leaving us exposed to in a matter which could jeopardize our clients.
I'd go for the domain controller being the server if it was recommended, but I'm just fearful of messing something up. I've tried hooking up with local IT providers but they want the servers again in a Data Center and the cost is just overwhelming.
Any suggestions would be so helpful and I'll move this post if anyone feels I'm hijacking the thread. But, the other posters situation is something that I could deal with so I'm just trying to learn and piggy back off of the same topic.
Hello, I have some questions on how to set-up Reverse DNS, PTR and MX records for our private Excha...
Hello, I have some questions on how to set-up Reverse DNS, PTR and MX records for our private Exchange email server sitting behind a Comcast Static IP address.
We run our own Exchange server on a private network behind static IP address: 126.96.36.199. Our domain is www.estarmail.com and mail.estarmail.com for email. I have registered these domains and set up Reverse DNS, PTR and MX records at REGISTER.COM our registrar.
When I go to DNSQUERY.COM I get no results for A, CNAME, MX and TXT queries. The DNS and PTR query properly return estarmail.com for my IP. The reverse DNS query returns an undefined (???) PTR to my domain. The WHOIS query returns Comcast Business Communications, LLC.
What can I do to get the various missing or incorrect DNS records set up so they will resolve properly to our static IP and domain?
Office: +1 (773) 697-8283
Cell: +1 (847) 372-2381
A domain registry like register.com is only authoratative for forward records like A records and MX...
A domain registry like register.com is only authoratative for forward records like A records and MX records. You can only setup PTR records with the hoster of the IP address block - in this case Comcast.
The by the book process is contact Comcast on the phone Mon-Fri 8-5pm Eastern time.
Incidentally your PTR isn't correct. Take a look at the following:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
Default Server: UnKnown
> set type=mx
estarmail.com MX preference = 0, mail exchanger = mail.estarmail.com
estarmail.com nameserver = dns142.a.register.com
estarmail.com nameserver = dns167.b.register.com
estarmail.com nameserver = dns223.c.register.com
estarmail.com nameserver = dns249.d.register.com
mail.estarmail.com internet address = 188.8.131.52
dns142.a.register.com internet address = 184.108.40.206
dns167.b.register.com internet address = 220.127.116.11
dns223.c.register.com internet address = 18.104.22.168
dns249.d.register.com internet address = 22.214.171.124
> set type=a
> set type=ptr
126.96.36.199.in-addr.arpa name = estarmail.com
(should be mail.estarmail.com)
91.70.in-addr.arpa nameserver = dns104.comcast.net
91.70.in-addr.arpa nameserver = dns102.comcast.net
91.70.in-addr.arpa nameserver = dns103.comcast.net
91.70.in-addr.arpa nameserver = dns105.comcast.net
91.70.in-addr.arpa nameserver = dns101.comcast.net
dns101.comcast.net internet address = 188.8.131.52
dns101.comcast.net AAAA IPv6 address = 2001:558:fe23:8:69:252:250:103
dns102.comcast.net internet address = 184.108.40.206
dns102.comcast.net AAAA IPv6 address = 2001:558:1004:7:68:87:85:132
dns103.comcast.net internet address = 220.127.116.11
dns103.comcast.net AAAA IPv6 address = 2001:558:1014:c:68:87:76:228
dns104.comcast.net internet address = 18.104.22.168
dns104.comcast.net AAAA IPv6 address = 2001:558:100a:5:68:87:68:244
dns105.comcast.net internet address = 22.214.171.124
dns105.comcast.net AAAA IPv6 address = 2001:558:100e:5:68:87:72:244
Forward and reverse records only exist for hostnames not domains.
A domain (estarmail.com) can have a MX record and it can have an A record but the MX
record is only used for routing mail. The A record is not. CNAME records are not used
for routing mail at all. Setting a PTR (reverse DNS) record to point to a domain instead of
a hostname is nonsensical.
I realize this may not be the correct forum for this, but it does relate to domain names and ip add...
I realize this may not be the correct forum for this, but it does relate to domain names and ip addresses.
I have a customer who uses comcast exchange servers for her business email. Since October she has experienced trouble sending email to some of her customers. I was asked to look into the problem.
A quick check of a blacklist lookup tool showed me that the three comcast exchange servers that currently send out her mail are all listed on several blacklists.
The server ip addresses are:
Could someone please inform whoever needs to know about this?
Same issue here with same listed IP addresses. email is bounced back from one client only at ...
Same issue here with same listed IP addresses. email is bounced back from one client only at this time, but past history suggests we will have more issues until the blacklist entry is cleared.
...; Now, when I try to log in, i get the error message "no route to host", even though traceroute...
I have set up a new linux computer behind a comcast business gateway. I have a static IP adress, 75.XXX.YY.254. Port forwarding is enabled to the ip address of the computer, 10.1.10.135. With my previous computer this setup enabled me to log in remotely using ssh. Now, when I try to log in, i get the error message "no route to host", even though traceroute can see the address of the exernal modem,
traceroute to 75.XXX.YY.253 (75.XXX.YY.253), 30 hops max, 60 byte packets
1 75-XXX-YY-253-SFBA.hfc.comcastbusiness.net (75.XXX.YY.253) 3.168 ms 3.048 ms 3.026 ms
I've set up /etc/ssh/sshd_config to all port forwarding.
Could anybody suggest what the problem might be?
Thanks very much for any suggestions.
For SSH to work on a Linux machine behind a NAT router, you will need to port forward TCP port 22 t...
For SSH to work on a Linux machine behind a NAT router, you will need to port forward TCP port 22 to the internal LAN IP address of your Linux machine (in your case 10.1.10.135), and to connect to it from other locations on the internet you will need to use the global static IP configured on the router.
Can you please clarify:
-Is your Linux machine connected to a separate router (whose WAN is configured with your Comcast-provided static IP), or is the Linux machine connected directly to the business gateway?
-What do you mean when you say "I've set up /etc/ssh/sshd_config to all port forwarding."?
Hi, I made my email act, but the temp password I didn't get to use because my computer restarted ri...
Hi, I made my email act, but the temp password I didn't get to use because my computer restarted right after I made it. I would delete and try to make a new one, but I told of the addy I was making, and have 3 emails in there. I don't see a forgot/reset password anywhere, is there anything that I can do? the email is email@example.com
thanks for the help, sorry I didn't say so sooner
Hello myclodel welcome to the forum, I'm sorry the password reset tool did not work for ...
Hello myclodel welcome to the forum,
I'm sorry the password reset tool did not work for you. Can you please check you private messages for further details on this issue.
No problem, I'm glad it has been resolved
Hello, I need to add a txt record and eventually change the MX record to move to Office365...
I need to add a txt record and eventually change the MX record to move to Office365 for just email. Comcast will continue to host our DNS and Website. How can i add/change these records?
Could I also get help with this?
Hello arnoldarnold, Welcome to the forum. To make update to your domain's DNS entry pl...
Welcome to the forum.
To make update to your domain's DNS entry please use the following steps.
1. Log into your Comcast Business online account using your primary admin email address.
2. Select Websites from the Manage Services menu.
3. Select Edit website.
4. In the Control Panel under Manage Services, select Domain Name.
Once inside the DNS entry menu, please update your records.
yaritza9, Thank you for the follow-up. If you need further assistance or have another ...
Thank you for the follow-up.
If you need further assistance or have another question please post.