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i notice most websites like twitter uses long funny from email address when you request a forgotten password. the email address looks like this

resetpw-ahgglavooyrf1984=ubgznvy.pbz-93f2e@postmaster.twitter.com

why is it so??

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migrated from stackoverflow.com Apr 14 '11 at 1:20

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closed as off topic by Wuffers, random Apr 14 '11 at 3:04

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Super User is for questions about computer software and hardware. This is not about either and is therefore off topic. –  Wuffers Apr 14 '11 at 3:00
    
@Mark: Is the Internet not "software"? –  grawity Apr 14 '11 at 5:04
    
See Bounce Address Tag Validation. –  grawity Apr 14 '11 at 5:05

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