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  1. #1
    Untangler
    Join Date
    Feb 2009
    Posts
    30

    Default Messages with large attachments seem to get "blocked"

    We are experencing an issue where mails with large attachments never arrive.

    Other sites set up similarly (untangle in front of exchange) receive the message, even if a user on the troubled site is in the CC list. An ok site will receive the message, the "bad" site won't.

    Strangely enough a users from the "OK" site can then forward the message to the "bad" site.

    Exchange SMTP transscript is below (names etc changed to protect the guilty).

    Could the untangle spam blocker be preventing the message data from being sent through or should I look elsewhere?


    ======



    220 home.com Microsoft ESMTP MAIL Service ready at Tue, 1 Sep 2009 12:29:10 +1000"
    EHLO mail.from.com.ac
    250-home.com Hello [99.99.99.99]
    250-SIZE 10485760
    250-PIPELINING
    250-DSN
    250-ENHANCEDSTATUSCODES
    250-STARTTLS
    250-AUTH
    250-8BITMIME
    250-BINARYMIME
    250 CHUNKING
    MAIL FROM:<from.from@from.com.ac> SIZE=7402873
    XXXXXXXXXXXXXXXX;2009-09-01T02:29:10.515Z;1,receiving message
    250 2.1.0 Sender OK
    RCPT TO:<to.to@to.com>
    250 2.1.5 Recipient OK

    sixty seconds elapse with no input

    451 4.7.0 Timeout waiting for client input

  2. #2
    Master Untangler amlife's Avatar
    Join Date
    Jan 2009
    Location
    Toronto,ON, Canada
    Posts
    109

    Default

    I'm having the same problem . .could somebody help us !!!

  3. #3
    Untangle Junkie dmorris's Avatar
    Join Date
    Nov 2006
    Location
    San Carlos, CA
    Posts
    17,486

    Default

    mandrake are you running two virus blockers?

    try increasing the timeout on your server from 60 seconds to 90 or 120 seconds.
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