Error en ensim

[luixtux]

Hola,
ensim me esta mandando a cada momento este error:
------------
This is a report generated by the hourly run of MailQueueCleaner. Some
sites on this server have problems which prevent the processing of
their email queues. UNTIL YOU RESOLVE THE PROBLEMS, THESE SITES WILL
NOT BE ABLE TO RECEIVE EMAIL. A summary of the problems is included
below.

dominio1.com: sendmail error, stdout: [], stderr: ['/usr/sbin/sendmail: error while loading shared libraries: libssl.so.4: cannot open shared object file: No such file or directory\n'], exit code: 127
dominio2: sendmail error, stdout: [], stderr: ['/usr/sbin/sendmail: error while loading shared libraries: libssl.so.4: cannot open shared object file: No such file or directory\n'], exit code: 127
-----------------

como hago para eliminar esto y que no me llene la cuenta de correo con estas noticaciones???

Gracias por su colaboracion y ayuda :)