IDN problems with email - (pecl idn is old, deprecated and will not install anyways)
I am using ISPConig3 latest with postfix and dovecot and horde 5 latest, and IDN domains will not authenticate (login) to Imp (horde's mail program - they do authenticate using sql backend to horde itself no problem). The horde list maintainer thinks the problem is elsewhere - probably, I believe with the creation of email and email accounts in ISPConfig3. Your docs stte the pecl idn extension is required, but it is 2009 old, basically depricated, and I have been told that it does not work with php 5.3 or newer. I am running php 5.4. Lastly it will not install at all on an up-to-date debian wheezy apache2 server. the make fails.
Would the proper setting of php-intl work, or could this phpclass - idn be used? : http://www.phpclasses.org/package/1509-PHP-Convert-from-and-to-IDNA-Punycode-domain-names.html
ANy help would be appreciated in how to test for this, i ISPConfig3 is indeed at error here.
Thanks
webmaster-eddie