SHORT DESCRIPTION

This Perl module provides routines for checking validity of email address.

It makes several checks:

1. it checks the syntax of an email address;
2. it checks if there any MX records or A records for the domain part of the email address;
3. it tries to connect to an email server directly via SMTP to check if mailbox is valid. Old versions of this module performed this check via the VRFY command. Now the module uses another check; it uses a combination of MAIL and RCPT commands which simulates sending an email. It can detect bad mailboxes in many cases.

This module was designed with CGIs (or any other dynamic Web content programmed with Perl) in mind. Usually it is required to quickly check e-mail addresses in forms. If the check can't be finished in reasonable time, the e-mail address should be treated as valid.

For details see pod documentation in Mail::CheckUser

REQUIREMENTS

This module requires next Perl modules:

1. Net::SMTP (libnet package)
2. Net::DNS (Net-DNS package)
3. IO::Handle (IO package)
4. Net::Ping (Net-Ping package)

Perl distributions before 5.6 contain version of IO::Handle which has bugs in timeouts handling. Download latest version from CPAN if you haven't done it before.

INSTALLATION

perl Makefile.PL
make
make test
make install

Tests may run very slow especially if networking is down.

LICENSE

Mail::CheckUser is provided "as is" and without any express or implied warranties, including, without limitation, the implied warranties of merchantibility and fitness for a particular purpose. Mail::CheckUser is released under the same terms as Perl itself. For more information see the "README" or "Artistic" files provided with the Perl distribution.

BUGS

If you have encountered any problems with this module fill free to contact author (Ilya Martynov <ilya@martynov.org>).