[Zope] Mailhost

Hi, i'm using zope 2.5.1 (linux version) with mailhost and i send emails from my web site for an our service. Yesterday my smtp server (that work on another machine) has not accepted the request from mailhost for to send some emails, so now i have lost this emails... I would like to know if the mailhost write somewhere a copy of mail's content... Can you help me? Thank you, Simone Iannelli