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Automatic reply messages from Office 365 are rejected when outbound filtering is enabled in Hosted Email Security (HES) 2.0

    • Updated:
    • 24 Apr 2015
    • Product/Version:
    • Hosted Email Security 2.0
    • Platform:
    • N/A N/A
Summary

When outbound filtering is enabled with Office 365, automatic reply messages(e.g. vacation leave message) from Office 365 is being rejected.

There is no issue when sending a normal outbound email. You can send to an external email address with outbound filtering enabled. The issue only happens for automatic reply messages from Office 365.

Details
Public

As part of sanity checking for outbound mails, HES rejects mails with null senders since this can be an indication of spam. This is a global practice. Out of office replies have null senders (RFC2298).

Premium
Internal
Rating:
Category:
Configure; Troubleshoot; Deploy; Register; Purchase
Solution Id:
1108840
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