Capturing Null Addresses in Policies

Document created by user.oxriBaJeN4 Employee on May 19, 2017Last modified by user.oxriBaJeN4 Employee on Apr 2, 2019
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This guide describes how messages from a null sender address (e.g. a can be captured by a gateway policy.


Applies To...


  • Administrators responsible for managing gateway polices.




Null addresses are considered as internal addresses in Mimecast.


<> is the default postmaster envelope address used by Mimecast and most other mail systems. As the address could indicate the internal postmaster, any policy you use to catch all inbound mail should be set as follows:


Field / OptionSetting
Applies FromEveryone
Applies ToInternal Addresses


See Also...