[horde] sending mail hanging

[Girigi Ngabirano]

Hello evveryone.
Please, I need your help.
I am using horde 2  with IMP.
IMP let me login, receive, read and compose mails.
Problem: if I send, the horde2/IMP is hanging .
No message from the server. It can turn forever without sending that mail.
I have tried with many web browers and the problem is the same.
How can I can correct this problem.
Help me please

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