[Outlook 2013] Attachments being corrupted randomly

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Saturday October 24, 2015
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October 24, 2015
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Hello,

Hello guys!

I am having problem in a company when users receive external emails from different people with attachments and some of these attachments are corrupted when arrive in the inbox. The attachment can be PDF or XLS, DOC, etc.
I made a fully update on the office and adobe reader of a user but that didn't solve.

I took a machine that was with Outlook 2013 completely outdated and did not help too.

The strange thing is that all the machines are experiencing this problem at the same time.

When I open the email of attachment that was corrupted, from the webmail provider, I can open the attachment normally.

Sometimes an email that arrives with two attachments, one of the attachments opens and the other appears the corrupted message, and again, randomly.

If the employee forwards the email with the corrupted attachment for me (I have Outlook 2013 with hostgator email provider) the corrupted message appears too.

I tryed to open the outlook in safe mode, but the user said that is having the same problem.

The outlook 2013 is set to use IMAP port 143 and SMTP port 587.

Could someone help me?