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Windows Thread, Emails being bounced back, anyone mnake sense of it? in Technical; My school are trying to email a local College and all emaisl are being bounced back. It is worth noting ...
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    Emails being bounced back, anyone mnake sense of it?

    My school are trying to email a local College and all emaisl are being bounced back. It is worth noting our emails, according to them, are the only ones not getting through, and emails from our end are all going fine apart from to them.

    This is the bounceback we are reciieving, as the generating server is theirs, i am assuming it is their issue and there will be little i can do, but wouldnt mind confirmation on this.

    Diagnostic information for administrators:

    Generating server: mccsexch03.mc.local

    xxx@Macclesfield.ac.uk
    #554 5.6.0 STOREDRV.Deliver; Corrupt message content ##

    Original message headers:

    Received: from mhmsexch01.mhs.local (xxx) by mccsexch03.mc.local
    (xxx) with Microsoft SMTP Server (TLS) id 8.2.254.0; Tue, 15 Jun
    2010 10:02:15 +0100
    Received: from mhmsexch01.mhs.local ([xxx]) by mhmsexch01.mhs.local
    ([xxx]) with mapi; Tue, 15 Jun 2010 10:02:14 +0100
    Content-Type: application/ms-tnef; name="winmail.dat"
    Content-Transfer-Encoding: binary

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    ZeroHour's Avatar
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    What version of exchange?
    Any AV on it?

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    FN-GM's Avatar
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    Is mccsexch03.mc.local & mhmsexch01.mhs.local your exchange server?

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    2007, just ran microsoft updates on it yesterday to make sure it is up to date wth patches and rollup etc. Have Avast AV on it, we had probs due to AV a few weeks ago when we installed it but solved them and been fine ever since, plus that time the messages were coming from our server, so we knew it was our problem. Not changed anything on site before this happened.

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    mc.local server is the exchange server at the college which we are trying to email. the mhs.local is our exchange server

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    You can troubleshoot SMTP connections by using telnet to connect to the receiving SMTP server on port 25 and simulating an SMTP exchange by manually typing the commands. See XFOR: Telnet to Port 25 to Test SMTP Communication

    Note that on Windows 7 Telnet client is no longer installed by default and has to be added through add/remove windows components

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    "winmail.dat"
    Too late/stupid to be sure, but I think you're sending those - so does it make a difference if you turn it off? There is/was a don't send Exchange RTF setting somewhere.

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