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Sendmail supports a feature called 'plussed users'. Once enabled, emails sent to

  • myname+spam@example.com,
  • myname+sometopic@example.com and
  • myname+anything@example.com

are automatically delivered just like mails to myname@example.com. There is no need to register or set up these 'plus suffixes'. The user can just use them and set up client-side filtering rules on his own.

Does Exchange support a similar mechanism? If so, how to enable it?

Note that I don't want answers about other means of filtering, e.g. spam/junk filtering, server-side or client-side rules, email aliases/addresses that are configured explicitly and so on.

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What's the purpose of this "feature"? –  joeqwerty Oct 27 '10 at 16:36
1  
For example, if you are active in a forum called 'lolcat', you might use the myname+lolcat@example.com address there. This way, if people use the e-mail link displayed in your forum posts, you can have a client-side filtering rule to make sure that all these mails get flagged/through your spam filter/sorted into a folder/you name it. –  Jens Bannmann Oct 28 '10 at 7:41
1  
possible duplicate of Does Exchange support disposable e-mail addresses? –  sysadmin1138 Dec 21 '10 at 2:50

3 Answers 3

up vote 6 down vote accepted

Since Exchange 2007 / 2010 doesn't support it, the only way would be to create your own MTA (Mail Transport Agent). Luckily there's (at least) one guy that already did the basics for you.

http://durdle.com/regexcatchall/

RegExCatchAll is a Transport Agent for Microsoft Exchange 2007 and 2010. It provides email suffix matching based on standard .NET regular expressions and can deliver email to Exchange Mailboxes or external SMTP addresses. It stores its configuration in an XML file which can be updated live without restarting any services. It also includes a “banned alias” list, so you can blacklist any of your previously used suffixes

HTH

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No, Exchange doesn't support this. A similar feature (nicknamed "disposable e-mail addresses") was proposed for Exchange 2010, but it didn't make the cut.

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I'm not saying definitively, but sending to my username "+test@" work (E2k3) email did not come through. I'm not willing yet to say that it doesn't work at all, but it doesn't work in my environment.

Also a cursory search of the web does not come up with any references. It may be possible to enable this behavior, but I don't know how.

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Same results here. name+text@domain.com failed to deliver. –  PMGoldstein Oct 27 '10 at 13:13
    
Right, it didn't work for me either, and as I couldn't find any info on the web, I decided to ask here :-) –  Jens Bannmann Oct 28 '10 at 7:36

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