What software is in-use for the mail server, any AV products that might be intercepting it, and the mail clients?
Have you tried tossing a packet capture on the mail server to see what is received from your client? Or what the recipient receives when he pulls mail from his box? -A On Thu, Sep 2, 2021 at 11:34 AM Ken Johnson via mailop <mailop@mailop.org> wrote: > I recently needed to send a software key to a remote colleague who needed > to > reinstall some commercial software after re-installing Windows. However, > after the key failed to authorize, an investigation determined that the key > was corrupt in the email he received from me. The first line of the key > was > truncated and repeated. This message only passes through the company email > server, so the problem is limited in scope. (I have transmitted the key in > another way in the meantime.) > > The key is 6 lines of plain text, visible non-blank ascii characters only. > The first line of the key is: > > PXP70-KK4tQ6fJQYAI32PugLL4GK9pJOZT4ocM9J0ICAoharwSAYhplSMpFm+n+b2xJ65hNI043 > > which becomes: > > PXP70-KK4tQ6fJQYAI32PugLL4GK9pJOZT4ocM9J0ICAoharwSAYhplSMpFm+n+b2xJ65hNI > PXP70-KK4tQ6fJQYAI32PugLL4GK9pJOZT4ocM9J0ICAoharwSAYhplSMpFm+n+043 > > by the time it is delivered to my remote colleague. This is repeatable, > and > this symptom also occurs if I send this key to another colleague working in > the same remote location. It does not occur if I send this key to myself. > We are using different email clients. > > If the cause of this problem is obvious but overlooked by me, please let me > know. Thanks. > > Ken > > > > > > > > > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://list.mailop.org/listinfo/mailop >
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