Import mail from Google apps to Postfix/Dovecot Maildir

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I was using Google apps for work and now I set up my own mail server since I have a lot of users and paying Google would be too much for that number 🙁

Currently my Postfix and Dovecot are set to use Maildir/.
I downloaded backup of mails from Google.
But, how to import that into my server since I am using Mailid/ and the file that I get from Google is All mail Including Spam and Trash.mbox

Do I need to reconfigure Postfix and Dovecot to Mailbox instead of Maildir or there is some other way to import that data.

Everything is working just fine except I need to import that old mails from Google.

Sorry, but I am completely new in Mail server configuration.

Best Answer

If you still have access to Google apps mail using imap protocol then you can use imapsync tool to copy all mail from one account to another regardless of their storage backend.

Related Solutions

Postfix Inbound/Outbound Gateway for Google Apps

I'm going to suggest you configure things a little differently. Google's more redundant then your one server and it will cause many fewer problems with mail delivery. The issue is, if you forward a lot of messages from an smtp server, sometimes google throttles an ip even if it has been whitelisted in the Google Apps CPanel. We've had to get Google to whitelist (not the same as the CPanel whitelist) a few SMTP relays we maintain for legacy domains.

Have your MX records all point to your Google Apps domain. You can then add static routes on each mailbox you want to forward over to the postfix server. Create a firewall rule to only accept email from google's IP networks which can be found in the spf record listed below. You might want to look at this on a regular once or twice a year to make sure it hasn't changed. Add the Postfix server's ip to your spf record and the relevant google information by following Google's instructions for creating SPF records.

SPF records are you best protection from looking like a spammer.

$ dig txt _spf.google.com

;; ANSWER SECTION: _spf.google.com. 300 IN TXT "v=spf1 ip4:216.239.32.0/19 ip4:64.233.160.0/19 ip4:66.249.80.0/20 ip4:72.14.192.0/18 ip4:209.85.128.0/17 ip4:66.102.0.0/20 ip4:74.125.0.0/16 ip4:64.18.0.0/20 ip4:207.126.144.0/20 ip4:173.194.0.0/16 ?all"

Here is the SPF record for one of the 60 domains I manage. Your SPF record should look something like this:

oeh.com. 3600 IN TXT "v=spf1 a:czar.oeh.com a:kaiser.oeh.com ip4:12.52.185.83 ip4:64.88.185.105 ip4:173.45.98.190 include:listrak.com include:_spf.google.com ~all"

Postfix/Dovecot support multiple domains

Persistently requiring the full domain name for every address is biting you in the backside here.

It really isn't necessary since all you have is the one domain, so a simple solution would be to alter the SQL lookups to act on the localpart only.

Add the new domain to virtual_mailbox_domains and perform only a localpart lookup on virtual_mailbox_maps.

Both domains and all users in it will be accepted and delivered.

Using a complicated query for virtual_mailbox_domains isn't likely to help, either.
Just list the domain(s) in virtual_mailbox-domains:

virtual_mailbox_domains = olddomain, newdomain

Best Answer

Related Solutions

Postfix Inbound/Outbound Gateway for Google Apps

Postfix/Dovecot support multiple domains

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