What is "implicit destination" in regard to e-mail?

    I received an e-mail after I had sent one to various people. Here is the message I received: Your mail to 'Ecircle' with the subject

    Re: Photography and other things

    Is being held until the list moderator can review it for approval.

    The reason it is being held:

    Message has implicit destination

    0  Views: 183 Answers: 1 Posted: 12 years ago

    1 Answer

    1.9. What does "message has implicit destination" mean?

    It means that the address for the list was not found in the To: or CC: headers.

    Typically this is due to one of a couple reasons:

    1) Your list has a different domain name (FQDN) than you think it does, or than was used as the target address of the message. See the second to last entry on the main list configuration page to ensure that you have this set properly.

    If you're the list admin, and you want to have some alternate email addresses for your list (for example, one might have pointing to you can add the alternate address as an alias for the list under Privacy options->Recipient filters by adding it to the field of acceptable_aliases.

    2) The message was BCC'ed (blind carbon copied) to the list, and was actually not addressed to the list directly (not that you can see).

    If you're running an umbrella list, you may want this message to be accepted by the sub-list. To do that, in the sub-list's admin screen, go to Privacy Options / Recipient Filters / Alias Names, and enter the name of the umbrella list as a valid alias.

    The reason this happens is that mail being distributed by a mail list retains the name of the mail list in the To: header and the name of the original sender in the From: header. So, when the mail gets to the sub-list, it is still marked as being To the umbrella list. By entering the name of the umbrella list as a valid alias, you tell your sub-list that it's OK to accept mail which was originally sent to the umbrella list.

    Alternatively, if you want to accept all BCCs to the list and get rid of this message entirely, go to Privacy Options / Recipient Filters and set the require_explicit_destination option to be "No". This should be the first option on the page, and by default, Mailman will set this option to be "Yes".

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