fixed error in mail_backup -> all mail-backups would have been deleted with...

root

2015-11-21 2bc9e1279176d05a78349dc0e6bff83ba4719fae

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ALTER TABLE `dns_rr` CHANGE `data` `data` TEXT NOT NULL DEFAULT '';
ALTER TABLE  `web_domain` DROP INDEX `serverdomain`, ADD UNIQUE  `serverdomain` (  `server_id` , `ip_address`, `domain` );