Hi Noel, I have changed MX priority to high for mailhub, it has taken 5 hours to update, but when i checked with host -t mx example.com from mailhub.example.com still it shows mailhub as low priority, from external server it shows mailhub as high priority.
During this period i am able to send mails from mailhub using webmail but when i reply mails are not reaching new or old server but maillog in mailhub shows status=sent and relay= old Mail server IP instead of mailhub IP. Again when revert back MX priority low to mailhub.example.com mails are reaching old servers. Suggestions please to resolve the issue. Thanks and Regards, Ramesh --- On Tue, 11/1/11, Noel Jones <njo...@megan.vbhcs.org> wrote: From: Noel Jones <njo...@megan.vbhcs.org> Subject: Re: MX Priority To: postfix-users@postfix.org Date: Tuesday, 11 January, 2011, 10:54 AM On 1/10/2011 11:13 PM, Ramesh wrote: > > Hi, > > I have few queries about changing mail priority level. presently we have > taking mail service from mail service provider, we want to bring up our own > mail server as primary. > > mx entries > > example.com mail is handled by 0 example.com. > example.com mail is handled by 10 mailhub.example.com. > > Yesterday i've changed priority 0 to 20, making mailhub as lowest priority > 10, primary mail server for example.com > > when i send mail to x...@example.com from yahoo > maillog in mailhub shows 554 5.7.1 (Relay access denied) but i can send mail > from mailhub through webmail. > "relay access denied" means that example.com is not listed in mydestination, virtual_domains, virtual_alias_domains, or relay_domains. Postfix doesn't think it's responsible for that domain. > I would like to know... > 1)If we change mx priority, how much time it will take to update priority > level? Depends on your DNS TTL and if the remote site has your records cached. Anywhere from a couple minutes to a couple weeks for sites that have the old records cached. No delay for sites that don't have your records cached. > 2)If it takes more time during this period where new mails queued? Mail will be sent to the old primary if that's what remote sites have cached. > > Please suggest me things to follow for migrating primary to secondary mail > server. It's customary to reduce your DNS TTL a few days prior to planned changes. > > Thanks and Regards, > Ramesh > -- Noel Jones
