RE: Help in Moving over MX record from one provider to another
I did this just a couple months ago. We didn't see an impact on outgoing messages - you may if you have an SPF record. Incoming began resolving within 15-20 minutes for a few sender domains (Gmail, Hotmail), but you should allow 4-24 hours to be safe. I'd suggest doing this on a weekend or late night when your incoming mail traffic is less likely to be affected. Roger Wright Network Administrator Evatone, Inc. 727.572.7076 x388 _ From: Debashish Basak [mailto:dba...@pycon.com] Sent: Thursday, February 26, 2009 3:25 PM To: MS-Exchange Admin Issues Subject: Help in Moving over MX record from one provider to another Hello All, We are in the process of moving to a new location. The present internet provider is being changed to a new provider. Can someone who has gone through this advice as the best way to change the following: DNS Addresses MX record Will there be a downtime when this change happens? Any advice will be helpful. Thanking you and with Best Wishes, Debashish ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja~
RE: Help in Moving over MX record from one provider to another
You can minimize the delivery delays if you cut back on the ttl's on the existing DNS records a day or two in advance of the changeover. Worst case scenario is that some DNS servers will have the old information cached, and and mail server that uses those records will not be able to contact your mail server on the first delivery attempt. Those emails should get queued, and by the time the next retry attempt rolls around the ttl's will have expired, they'll get the right information on the second attempt. From: Debashish Basak [mailto:dba...@pycon.com] Sent: Thursday, February 26, 2009 2:25 PM To: MS-Exchange Admin Issues Subject: Help in Moving over MX record from one provider to another Hello All, We are in the process of moving to a new location. The present internet provider is being changed to a new provider. Can someone who has gone through this advice as the best way to change the following: DNS Addresses MX record Will there be a downtime when this change happens? Any advice will be helpful. Thanking you and with Best Wishes, Debashish ** Note: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. ** ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja~
RE: Help in Moving over MX record from one provider to another
They say up to 24 hrs for propagation to take place, but when I did it this past summer it was completed in a few hours. No issues after that. Sean Donnelly IT Operations Manager tel. (781) 935-6020 x395 fax (781) 998-2682 Service Point USA Document, Print, and Information Management www.servicepointusa.com http://www.servicepointusa.com/ From: Debashish Basak [mailto:dba...@pycon.com] Sent: Thursday, February 26, 2009 3:25 PM To: MS-Exchange Admin Issues Subject: Help in Moving over MX record from one provider to another Hello All, We are in the process of moving to a new location. The present internet provider is being changed to a new provider. Can someone who has gone through this advice as the best way to change the following: DNS Addresses MX record Will there be a downtime when this change happens? Any advice will be helpful. Thanking you and with Best Wishes, Debashish * This communication is confidential and may contain privileged information intended solely for the named addressee. It may not be used or disclosed except for the purpose for which it has been sent. If you are not the intended recipient, you may not copy or distribute this communication. Unless expressly stated, opinions in this message are those of the individual sender and not of Service Point USA. If you have received this communication in error, please notify Service Point USA by emailing postmas...@servicepointusa.com quoting the sender and delete the message and any attached documents. This footnote confirms that this email message has been swept by MIMEsweeper for Content Security threats, including computer viruses. Service Point USA 150 Presidential Way Ste 210 Woburn, MA 01801 www.servicepointusa.com * ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja~
RE: Help in Moving over MX record from one provider to another
First of all, thanks for the info to Roger Wright and Rob Campbell for the suggestions. I will keep them in mind. As far as changing the DNS and MX records do I just cancel the zone file with the present provider and request for creation of a new zone file with the new provider? From: Campbell, Rob [mailto:rob_campb...@centraltechnology.net] Sent: Thursday, February 26, 2009 12:39 PM To: MS-Exchange Admin Issues Subject: RE: Help in Moving over MX record from one provider to another You can minimize the delivery delays if you cut back on the ttl's on the existing DNS records a day or two in advance of the changeover. Worst case scenario is that some DNS servers will have the old information cached, and and mail server that uses those records will not be able to contact your mail server on the first delivery attempt. Those emails should get queued, and by the time the next retry attempt rolls around the ttl's will have expired, they'll get the right information on the second attempt. _ From: Debashish Basak [mailto:dba...@pycon.com] Sent: Thursday, February 26, 2009 2:25 PM To: MS-Exchange Admin Issues Subject: Help in Moving over MX record from one provider to another Hello All, We are in the process of moving to a new location. The present internet provider is being changed to a new provider. Can someone who has gone through this advice as the best way to change the following: DNS Addresses MX record Will there be a downtime when this change happens? Any advice will be helpful. Thanking you and with Best Wishes, Debashish ** Note: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. ** ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja~
RE: Help in Moving over MX record from one provider to another
You should notify the exiting provider in advance that they will no longer be authoritative for that zone after the cutover. If you don't do that, their DNS servers will continue to provide the wrong information to any of their clients using those servers. From: Debashish Basak [mailto:dba...@pycon.com] Sent: Thursday, February 26, 2009 2:44 PM To: MS-Exchange Admin Issues Subject: RE: Help in Moving over MX record from one provider to another First of all, thanks for the info to Roger Wright and Rob Campbell for the suggestions. I will keep them in mind. As far as changing the DNS and MX records do I just cancel the zone file with the present provider and request for creation of a new zone file with the new provider? From: Campbell, Rob [mailto:rob_campb...@centraltechnology.net] Sent: Thursday, February 26, 2009 12:39 PM To: MS-Exchange Admin Issues Subject: RE: Help in Moving over MX record from one provider to another You can minimize the delivery delays if you cut back on the ttl's on the existing DNS records a day or two in advance of the changeover. Worst case scenario is that some DNS servers will have the old information cached, and and mail server that uses those records will not be able to contact your mail server on the first delivery attempt. Those emails should get queued, and by the time the next retry attempt rolls around the ttl's will have expired, they'll get the right information on the second attempt. From: Debashish Basak [mailto:dba...@pycon.com] Sent: Thursday, February 26, 2009 2:25 PM To: MS-Exchange Admin Issues Subject: Help in Moving over MX record from one provider to another Hello All, We are in the process of moving to a new location. The present internet provider is being changed to a new provider. Can someone who has gone through this advice as the best way to change the following: DNS Addresses MX record Will there be a downtime when this change happens? Any advice will be helpful. Thanking you and with Best Wishes, Debashish ** Note: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. ** ** Note: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. ** ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja~
RE: Help in Moving over MX record from one provider to another
I normally double up on the DNS a week or so in advance... Give the new MX record the value of 10, existing MX 20. That way your email move will be instant as soon as the new IP is up running. From: Debashish Basak [mailto:dba...@pycon.com] Sent: Thursday, February 26, 2009 4:25 PM To: MS-Exchange Admin Issues Subject: Help in Moving over MX record from one provider to another Hello All, We are in the process of moving to a new location. The present internet provider is being changed to a new provider. Can someone who has gone through this advice as the best way to change the following: DNS Addresses MX record Will there be a downtime when this change happens? Any advice will be helpful. Thanking you and with Best Wishes, Debashish ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja~
RE: Help in Moving over MX record from one provider to another
R U changing your DNS provider for the zone? If that is the case, then you can have 24 to 48 hours of downtime. Move to your new DNS provider before moving locations... if you are just changing the records then it usually happens in 24 to 48 hours. I always just go in 24 hours before and put the new IP as the MX 10 and leave the current as MX 20 When the cutover happens email should transparently flow without issues, and then I just go remove the secondary(Old location) Changing hostnames is usually the most problematic as there is no way for those to rollover seamlessly and usually only take a few hours...the TTL suggestion will help with this tremendously. Greg From: Debashish Basak [mailto:dba...@pycon.com] Sent: Thursday, February 26, 2009 3:25 PM To: MS-Exchange Admin Issues Subject: Help in Moving over MX record from one provider to another Hello All, We are in the process of moving to a new location. The present internet provider is being changed to a new provider. Can someone who has gone through this advice as the best way to change the following: DNS Addresses MX record Will there be a downtime when this change happens? Any advice will be helpful. Thanking you and with Best Wishes, Debashish ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja~
Re: Help in Moving over MX record from one provider to another
On Thu, Feb 26, 2009 at 3:24 PM, Debashish Basak dba...@pycon.com wrote: We are in the process of moving to a new location. The present internet provider is being changed to a new provider. This is a straightforward procedure. You can change the A records associated with the domain names specified by your MX records, or you can change your MX records. I suggest changing the MX records. Since you're allowed to specify multiple MX records, add MX records for the new site, while leaving the old ones intact. That way you can cut-over the servers, and the rest of the Internet will retry around you. Will there be a downtime when this change happens? Are you moving servers as well, or are you bringing up new servers in the new location, to replace old servers at the old location? If you're moving servers, of course there will be downtime when those servers are down. Most mail systems will retry for a day or two, so you may be able to sustain an outage of a few hours without anyone noticing. Ideally, you get connectivity at the new site, and bring up new equipment there. Have that equipment forward mail back to your old site. Then add the MX records for the new site, making them preferred over the old site's MX records. The rest of the world will start sending mail through your new site, and the new site will forward it to your old site. Then, when ready, you just stop forwarding and leave mail at your new site. Once you're confident everything is working at the new site, remove the MX records for the old site. Then, and only then, discontinue connectivity services at your old site. On Thu, Feb 26, 2009 at 3:43 PM, Debashish Basak dba...@pycon.com wrote: As far as changing the DNS and MX records do I just cancel the zone file with the present provider and request for creation of a new zone file with the new provider? There's absolutely no technical reason your DNS hosting should be tied to your connectivity provider. Don't try to switch both connectivity and DNS hosting at the same time; it makes things more complicated, and opens you up to failure scenarios you can't easily get out of. If your connectivity provider is also your DNS provider, and you want to keep it that way, then I suggest first getting the services activated at your new site, well in advance. Copy your DNS zone from the old provider to the new provider, but keep the records as they are for your old site. Run manual queries to confirm both providers are giving the same set of DNS answers. Then submit the changes at the DNS registry to switch to the new DNS provider. The rest of the world will gradually switch over from the old DNS provider to the new one, but since both providers are giving the same answers, it doesn't matter who they ask. There is an unpredictable delay for the time it takes your registrar to process your change request and submit it to the registry. This can range from minutes to hours. Once your registrar has submitted changes to the registry, things are predictable. Last I knew, changes at the GTLD nameservers are loaded twice a day, so allow up to 12 hours for that. TTL on the GTLD zones is 48 hours. So at a minimum, allow for 60 hours for changes to registered nameservers. Once DNS is transitioned, then start making connectivity and/or server changes. -- Ben ~ Ninja Email Security with Cloudmark Spam Engine Gets Image Spam ~ ~ http://www.sunbeltsoftware.com/Ninja~
