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Courrier accounts migrating to dovecot server

Discussion in 'E-mail Discussions' started by pagchen, Dec 18, 2012.

  1. pagchen

    pagchen Member

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    Hi,
    I am about to migrate Cpanel accounts that currently use courrier mailserver to another box set to dovecot.
    Is there any conversion I need to do prior to migration so users don't have unexpected behaviors like read messages shown as unread etc.; I have full control of both boxes.

    Many users are using IMAP protocol and/or webmail without pop downloading.

    Thanks for any insights,
     
  2. mtindor

    mtindor Well-Known Member

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    Assuming you're already using maildir format [and I'm betting everyone is after all these years], there should be no difference in read/unread messages.

    Read messages are stored in the /cur folder under the email account or subfolder of an email account. New messages are stored in /new. So, when you migrate they are still going to retain the same read/unread status. This is true regardless of whether the messages are in the Inbox or in a subfolder created in the mail account.

    To see what differences [in behavior] you might experience between the two, go to WHM --> Mailserver Selection in one of your WHM's. Basically, the only difference worth mentioning is the fact that in Dovecot the "Trash mailbox is not automatically expunged."

    M
     
  3. pagchen

    pagchen Member

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    Thanks mtindor, totally makes sense.

    Do you know if I first need to change one of the two mailserver to fit the other prior to migration or is migration taking care of seemlessly converting courrier to dovecot accounts while migrating ?

    Thanks.
     
  4. mtindor

    mtindor Well-Known Member

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    I can't say for sure since I do run only Courier, but I am 97.6325% confident that you don't need to do anything at all :) You can migrate back and forth between Courier and Dovecot all day long.

    Mike
     
  5. mtindor

    mtindor Well-Known Member

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    Actually, I will add one thing [which you have probably already done]. I'd try to set similar limits in WHM --> Mailserver Configuration. For instance, if you allow a certain maximum # of connections per IP on one box, try to have similar settings on the other box [overall mail traffic differences notwithstanding]. I know I've had to tune # of connections per IP because particular customers may have numerous oft-checked email accounts behind the same WAN/firewall IP address, and thus I had to increase the maximum # of connections per IP to accomodate. If I were to move that customer to another server, I'd want to make sure I have accounted for them by also increasing the max # of connections per IP on that server.

    Mike
     
  6. pagchen

    pagchen Member

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    An important point for sure. Thanks for the reminder.

    I'll set a test account tonight and try to migrate it to see if the conversion takes place. I guess so as it would otherwise been specified on the migration instructions, but I'd rather find out before than after.
    Cheers,
     
  7. mtindor

    mtindor Well-Known Member

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    I don't blame you. That's always the better option when available.

    Good luck!

    Mike
     
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