Martin A. Brooks wrote:
> Marc Perkel wrote:
>> Actually that isn't the case. The IMAP folder has to already exist so 
>> if someone does a dictionary attack then any local part that doesn't 
>> match a folder will be rejected as an unknown user. If the folder 
>> already exists them mail is delivered into that folder. If it doesn't 
>> exist isn't not created.
>>   
>
> So what you're saying is that if a folder exists then mail directed to 
> it will be delivered.
> If a folder doesn't exist, mail won't be delivered to it.
>
> In other words, mail to an existing user (therefore existing folder) 
> will be delivered, mail to a non-existing user won't.
>
>

Yes - exactly!

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