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es1100 message size limits

pez

i'd like to configure my es1100 email appliance so that i can have different message size limitations for different users

i set: policy - filtering options and global message limit to the largest i'd accept (30M), and created under "additional policy" a rule that uses message attributes, message size > 12M, for all users except specific ones, to quarantine and continue

however when i test it, with a 16MB file, it just lets it through. is there any problems with my logic or common gotchas i'm missing?

regard

andrew

:13449


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  • 0

    Hi Andrew,

    Your logic is sound, I performed a similar test  and the rule action as expected.  When you tested the rule, how long after did you send the message through.  The milter has to reload the configuration and it may take up to a few minutes before that occurs.

    If you want you can contact our support team and they will be happy to monitor a test message from the backend of the system.

    -Jason

    :13583
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    hi Jason, thanks for that. you might be right, though i did allow a little time and tested it again later. but just now i changed it to quarantine anything 11mb and over and it seems to be working. perhaps my test document was compressing to less than that i do have a support call open but i think they are a little busy as i've only had a message so say someone is looking into it if i say to discard instead of quarantine does it generate an NDR? regards andrew
    :13605
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    Hi Andrew,

    Any action performed in the policy will not generate an NDR if you quarantine or discard.   You can create an additonal action to notify the sender or custom address for reasons why the message was quarantined or discarded.  Select the notify option from the dropdown box in the Additional Action wizard page of the rule you're editing.  From there you can choose what you want to do.

    -Jason

    :13629
  • 0

    thanks Jason, i'll try it out

    regards

    andrew

    :13643
  • 0

    hi Jason,

    that did work fine, as you suggested.

    i do have another query though, when the email appliance rejects a message due to size, how much of the message is downloaded before it is rejected?

    i'm trying to work out if i should just have a global limit set in the ES1100, and then different limits for individual users in exchange

    if the email appliance is going to download the whole message anyway, then i might as well use exchange to differentiate between users allowed to have larger attachments, but if the appliance will only download whatever te global limit is before rejecting, or the amount set in the additional policy, then i'd prefer to use the appliance as that would limit wasted bandwidth

    regards

    andrew

    :13945
  • 0

    Hi Andrew,

    The message size determined from the global level is determined by the MTA in this case Postfix.  The appliance policy rules are after the message has been received from Postfix into our filtering software.  If you have varying size limits for specific users, then you would want to se the max size at the MTA level and have the appliance software determine for each user/group what is allowable.

    You cannot at the MTA level specify what user/group is allowed as message size, it is system wide on reciept of the message.

    -Jason

    :13981
  • 0

    hi Jason,

    thanks for that. you've been very helpful

    regards

    andrew

    :13987
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