can I "detect" whether a mail address is (still) valid ? (maybe stupid question)

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Subject: can I "detect" whether a mail address is (still) valid ? (maybe stupid question)
Posted by:  Tom (nospam@nospamplease.com)
Date: Fri, 12 May 2006

Hello,

my customer has a db with 300000 mail addresses. Is there a way to
check whether these addresses are still available ? I heart that it
should be possible to connetc to a remote mail server to let him check
this ?

Which indy comp do I need and what would be the way to do this, please?

Thanks for your help

Thomas

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