Hi keiusui,

I don't know if this is exactly what you want, but if I were doing it, I'd write a daemon that periodically checks your mail server, and when it finds an email message that "matches" the criteria for a "bounced" message, takes the appropriate action on unsubscribing whomever it was you had written to.

Is that the kind of thing you're trying to do?  If so, let me know, and I'll dig up the code I wrote maybe half a year ago for doing my own "biff" (automated checking of the mail server with user notification for new messages, etc.)  Then you can modify it to your needs as far as what action needs to be taken on "bounced messages".

s''(q.S:$/9=(T1';s;(..)(..);$..=substr+crypt($1,$2),2,3;eg;print$..$/

In reply to Re: detecting valid e-mail addresses using sendmail by liverpole
in thread detecting valid e-mail addresses using sendmail by keiusui

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.