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  • avoid sender address checking in virtusertable

    From Marco Moock@21:1/5 to All on Wed Sep 6 17:06:16 2023
    Hello!

    I have the hostname of my machine in virtusertable because I only want
    special accounts (in Cyrus) receiving mail. This has the side effect
    that sending from such an address address is being denied.
    I am aware that such messages cannot be bounced, although I want system
    users be able to send mail from these addresses.

    What is the best way to handle this while keeping
    specific@host.domain.com user
    @host.domain.com error:...

    in virtusertable to avoid backscatter?

    --
    kind regards
    Marco

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  • From Kalevi Kolttonen@21:1/5 to Marco Moock on Wed Sep 6 15:28:10 2023
    Marco Moock <mo01@posteo.de> wrote:
    I have the hostname of my machine in virtusertable because I only want special accounts (in Cyrus) receiving mail. This has the side effect
    that sending from such an address address is being denied.

    I am not 100% sure if I understood your problem, but
    you can use "From:" prefix in access db keys and
    "OK" as a value. See the README examples:

    -------- start README.cf -----------------------------

    If the required item is looked up in a map, it will be tried first
    with the corresponding tag in front, then (as fallback to enable
    backward compatibility) without any tag, unless the specific feature
    requires a tag. For example,

    From:spammer@some.dom REJECT
    To:friend.domain RELAY
    Connect:friend.domain OK
    Connect:from.domain RELAY
    From:good@another.dom OK
    From:another.dom REJECT

    -------- end README.cf -----------------------------

    Again, I am not sure whether that will work, but I
    guess it is worth trying.

    br,
    KK

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  • From Kalevi Kolttonen@21:1/5 to Kalevi Kolttonen on Wed Sep 6 15:34:10 2023
    Kalevi Kolttonen <kalevi@kolttonen.fi> wrote:
    Marco Moock <mo01@posteo.de> wrote:
    I have the hostname of my machine in virtusertable because I only want
    special accounts (in Cyrus) receiving mail. This has the side effect
    that sending from such an address address is being denied.

    I am not 100% sure if I understood your problem,

    My another take at this, but still I am not sure what you
    are trying to achieve. Do you want to use those Cyrus addresses
    as envelope senders? If so, you can probably try "genericstable" to
    reverse map your Cyrus addresses to working addresses.

    See README:

    FEATURE(`genericstable')

    br,
    KK

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  • From Marco Moock@21:1/5 to All on Wed Sep 6 17:51:24 2023
    Am 06.09.2023 um 15:34:10 Uhr schrieb Kalevi Kolttonen:

    My another take at this, but still I am not sure what you
    are trying to achieve. Do you want to use those Cyrus addresses
    as envelope senders? If so, you can probably try "genericstable" to
    reverse map your Cyrus addresses to working addresses.

    Yes, these addresses are envelope addresses, but the mailboxes don't
    exist in Cyrus (I also don't need them there).

    For example: A service running under the user ftp wants to send an email
    to root, it would be rejected.

    I will check if accessdb is right for that situation, thanks for that suggestion, it wasn't on my radar.

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