conversation with mail.company.com [x.x.x.x] timed out while sending message body

[andretapxure]

Hi, There!
I use zimbra 6.07 and from two weeks to now I´m having too much of this message:
The funny thing is gmail.com, hotmail.com, other public services and private servers are delivering ok to my server.
Can somebody help me?


This is the mail system at host pop.solucoesideais.com.br.

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<ronaldo@xangai.com.br>: conversation with mail.mycompnay.com[x.x.x.x]
timed out while sending message body