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Current File : //home/uiet/iRedMail-1.5.0/update/0.9.8/amavisd.mysql

-- If subject contains emoji, varchar doesn't work well.
ALTER TABLE msgs MODIFY COLUMN subject VARBINARY(255) DEFAULT '';
ALTER TABLE msgs MODIFY COLUMN from_addr VARBINARY(255) DEFAULT '';

-- mail address without address extension: user+abc@domain.com -> user@domain.com
ALTER TABLE maddr ADD COLUMN email_raw varbinary(255) NOT NULL DEFAULT '';

-- index
CREATE INDEX maddr_idx_email_raw ON maddr (email_raw);

-- Create trigger to save email address withou address extension
-- user+abc@domain.com -> user@domain.com
DELIMITER //
CREATE TRIGGER `maddr_email_raw`
    BEFORE INSERT
    ON `maddr`
    FOR EACH ROW
    BEGIN
        IF (NEW.email LIKE '%+%') THEN
            SET NEW.email_raw = CONCAT(SUBSTRING_INDEX(NEW.email, '+', 1), '@', SUBSTRING_INDEX(new.email, '@', -1));
        ELSE
            SET NEW.email_raw = NEW.email;
        END IF;
    END;
//
DELIMITER ;

-- Update all existing records.
UPDATE maddr SET email_raw=email WHERE email_raw='';