Re: [MLUG] flexible e-mail addresses

[Rick Buford <EMAIL:PROTECTED>]

Mike Miller wrote:

> I believe that it is possible in some e-mail delivery systems to allow 
> users to create an unlimited number of addresses that deliver to their 
> account.  The kind of system I have seen is where the user has a an 
> address such as EMAIL:PROTECTED but they are allowed to augment that 
> address by adding things after the plus sign.  For example, the user 
> could use EMAIL:PROTECTED when signing up for messages from 
> abc.com.  When the e-mail comes in, the recipient is understood to be 
> lsjones and the message is delivered to the appropriate account.  The 
> user can configure their account to handle messages based on what 
> follows the + sign.  For example, all messages sent to lsjones+abc could 
> be put in the abc inbox.
> 
> Does anyone know how this can be accomplished in a Linux system?  Have 
> any of you used it and is it recommended?  Finally, are spammers hip to 
> the plus sign trick and do they strip everything that follows the plus 
> sign before sending their spam?
> 
This should be pretty easily done with Postfix using recipient_canonical 
using:
recipient_canonical_maps = regex:/etc/postfix/recipient_canonical

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