problem with server smtp

[upsforum]

Hi,

My customer Had problem with webmail horde and roundcube, if send a mail to @tiscali.it address it get this error:

host imp-1.mail.tiscali.it [213.205.33.248]: 554 imp-1.mail.tiscali.it ESMTP server not available if you do not have a reverse dns mapping

[cPanelDavidG]

Hi,

My customer Had problem with webmail horde and roundcube, if send a mail to @tiscali.it address it get this error:

host imp-1.mail.tiscali.it [213.205.33.248]: 554 imp-1.mail.tiscali.it ESMTP server not available if you do not have a reverse dns mapping

Do you have Reverse DNS (RDNS) set up for that address?

[upsforum]

Where I can see this setup?

[crazyaboutlinux]

here you can see the RDNS look up
http://postmaster.aol.com/tools/rdns.html

[upsforum]

ok, but where I can setup this option?

[chirpy]

ok, but where I can setup this option?

You usually have to ask the datacentre where you obtain your server from to do this for you as they normally own the IP address delegation.

[crazyaboutlinux]

I do agree with Chirpy