ALERT: email addresses with slashes in them

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Question

It is possible that email addresses of the form user@domain.comuser will create a directory in Gordanooutdomain.comuser where the directory domain.com already exists.

It is also possible to create directories such as tempuser with an address of the form user@domain/../../temp/user again only where the directory temp already exists. This will be a directory only, it will not contain any files.

Answer

The smtp service can be protected from creating these directories by adding the following 2 entries to the redirect file:

* * *@*/* * T F "500 invalid email address"
* * *@** * T F "500 invalid email address"

Keywords:directory redirect

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