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Peter is absolutely correct. The mail will sit queued on a lower priority MX record specified server up until the expiry time which is at /least/ 48 hours. As long as your server change takes place within that time frame you will have no problems. The backup mail server will periodically try to re-deliver the queued mail to the highest mx record specified machine on whatever schedule it has set. in vopmail for example you can go into the control panel and force an immediate redelivery attempt after the job is done if that is running on your backup mailserver. We do it all that time. You would be amazed at howmuch mail can be queued during normal operation if the client does silly things like run their whole office off a single 56k link. Cheers Petar ----- Original Message ----- From: "Peter Nitschke" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, July 12, 2002 2:04 PM Subject: [VOPmail Beta] FW: FW: HELP - Mailserver Upgrade > * This is the vopmailbeta mailing list * > > > The purpose of backup hosts with higher MX records, is to provide > backup/storage until the main server comes back online again. > > The mail will be held until it reaches the expire time (most mailsers use > about 5 days by default) with a warning sent after a specified time, > usually about 4 hours. > > You could increase the warning timeout to longer than the server will be > off line so they don't get sent at all, then the mail will just sit until > it finds the real mailserver as long as that is before the expire time is > reached. > > Peter > > > > *********** REPLY SEPARATOR *********** > > On 12/07/2002 at 1:52 PM Malcolm Joosse wrote: > > >* This is the vopmailbeta mailing list * > > > > > >Petar, > >We have 3 backup mailservers that are setup as backups for their domain , > 2 > >of which are on different networks. We also have 4 DNS servers all with > >their records for primary and secondary. Our network is not going to be > >affected by this upgrade and all servers will be visable. > >I thought that if their mailserver was off the air , ours (backups) > would > >accept the email on their behalf but after 3 hours they (senders) would > >start getting NDRs. > >We have their mailserver in the DNS records as MX 5, then our backups as > >10,20 and 30 in priority. Do I need to change anything here ? > >Are you saying that if we disconnect their mailserver the email will just > >sit and wait indeffinatly on our mailservers untill their server is back > on > >air ? > >If so thank you for the help and offer, it will make my life easier if > this > >is the case. > >Regards > > > >Malcolm Joosse > >Hotline Support P/L > >www.hotlinesupport.com > > > > > > > >mua.org.au-----Original Message----- > >From: [EMAIL PROTECTED] > >[mailto:[EMAIL PROTECTED]]On Behalf Of Petar Nikolich > >Sent: Thursday, July 11, 2002 2:45 PM > >To: [EMAIL PROTECTED] > >Subject: [VOPmail Beta] FW: HELP - Mailserver Upgrade > > > > > >Just find someone to act as a third mx record for you that is not > >on your network and alter your dns for that client before the move. > > > >Of course all your dns servers are not going to be offline are they? > > > >If the volume won't be to high during the change then drop me a > >private email and I'll setup my box to queue your mail while > >your offline. Maybe you can reciprocate one day ;-) > > > > > >----- Original Message ----- > >From: Malcolm <mailto:[EMAIL PROTECTED]> Joosse > >To: [EMAIL PROTECTED] > >Sent: Thursday, July 11, 2002 10:38 AM > >Subject: [VOPmail Beta] FW: HELP - Mailserver Upgrade > > > >* This is the vopmailbeta mailing list * > > > > > > > >Hello, > >I have a client running Exchange 2000 and we need to move to a new > server. > >We can only do this after hours and the server will be down for about 10 > >hours during the move. > >We run VOPMail 5 and act as a backup domain for this client. I need a > way > >to hold their email during the period of migration and I need > suggestions. > >I cannot setup a catchall account as alot of the email is confidential > and > >there will also be 1000's of messages. > >I was thinking of using ERTN or some other way to prevent NDRs being sent > >to > >people trying to send to their domain. > >Any suggestions would be great. > >Thanks > >Malcolm > > > > > > > > > > > > > > _____ > > > > > > > > > > > > > >** > >To leave this list, send an email to [EMAIL PROTECTED] > >and put the word "LEAVE" in the BODY of the email. > > > > > > > > > > > > > >** > >To leave this list, send an email to [EMAIL PROTECTED] > >and put the word "LEAVE" in the BODY of the email. > > > > > ** > To leave this list, send an email to [EMAIL PROTECTED] > and put the word "LEAVE" in the BODY of the email. > ** To leave this list, send an email to [EMAIL PROTECTED] and put the word "LEAVE" in the BODY of the email.
