Outlook 365 Blocked PDF attachments.

Outlook 365 Blocked some of the PDF  attachments.
Naeem ChouglayIT EngineerAsked:
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JohnBusiness Consultant (Owner)Commented:
Some (small number) or all?   It may be seeing warning signs of a virus (the type of malware PDFs can carry)
Naeem ChouglayIT EngineerAuthor Commented:
no their is no virus, because when we move the email to PST. attachment is appearing on email.
JohnBusiness Consultant (Owner)Commented:
Since some are being received it is not an Outlook issue . Try getting the user to try again different file
Naeem ChouglayIT EngineerAuthor Commented:
email caching  OST was corrupt, recreate Caching OST. now it is working fine.

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