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Topic: Incoming mails are slow due to SpamAssasin / ClamAV / Amavisd scan

==== Required information ====
- iRedMail version: 1.5.1
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MYSQL
- Linux/BSD distribution name and version: Centos 6
- Related log if you're reporting an issue:
====

Our incoming mails are reaching the mail box very slow. However if we whitelist the appropriate domain then it is reaching the mailbox immediately. Do we need to configure anything SpamAssasin / ClamAV / Amavisd ?

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Re: Incoming mails are slow due to SpamAssasin / ClamAV / Amavisd scan

It's caused by greylisting. You can get more details about greylisting here: http://greylisting.org/