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Thread: Forwarding mail to an out of quota account produces a loop

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  1. #1
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    Default Forwarding mail to an out of quota account produces a loop

    Hi Everybody,
    I have the following problem:
    Suppose there is a mail system (based on Zimbra) with a user that set up a filter to forward all mails to an external account. When mail arrives to Zimbra it is correctly forwarded to the external mail system, but suppose that the external mail account is out of quota.
    What happens is that the external mail system produces a reply warning Zimbra that the receiving account is out of quota to Zimbra but (as I could see) it removes X-Zimbra-Forwarded header as it produces a new mail, so when that mail is received by Zimbra it is forwarded again to the external account starting in this way an infinite loop.
    My question is: Is there any way to avoid forwarding out-of-quota emails or it is a user responsibility to filter them?

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    Quote Originally Posted by cmargena View Post
    Hi Everybody,
    I have the following problem:
    Suppose there is a mail system (based on Zimbra) with a user that set up a filter to forward all mails to an external account. When mail arrives to Zimbra it is correctly forwarded to the external mail system, but suppose that the external mail account is out of quota.
    What happens is that the external mail system produces a reply warning Zimbra that the receiving account is out of quota to Zimbra but (as I could see) it removes X-Zimbra-Forwarded header as it produces a new mail, so when that mail is received by Zimbra it is forwarded again to the external account starting in this way an infinite loop.
    My question is: Is there any way to avoid forwarding out-of-quota emails or it is a user responsibility to filter them?
    More on this: The problem is that Zimbra does not have any "standard" rule to avoid forwarding mails from for example: "POSTMASTER" or "MAILER-DAEMON"

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    Add a filter rule for "POSTMASTER" | "MAILER-DAEMON" above forwarding filter, and check mark [Do not process additional filters] in its setting.

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    Quote Originally Posted by John Siu View Post
    Add a filter rule for "POSTMASTER" | "MAILER-DAEMON" above forwarding filter, and check mark [Do not process additional filters] in its setting.
    This has to be done user by user or can be done automatically?, Like having a master rule.

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    If the forwarding is configure at the admin gui, then I have no idea for now.

  6. #6
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    You may be able to create a script which will step through all your accounts and add the necessary filter rule, but AFAIK there's no built-in method of creating a master rule.

    This might be a good suggestion for an RFE--either the ability to create master rules, or an option to suppress certain types of filter actions on mail that matches certain profiles.

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