[imp] error in horde.log

[ANANT S ATHAVALE]

Dear List,

I have a following error reported in horde.log

Oct 18 2010 16:22:12 HORDE [error] [imp] From address specified with  
dangerous characters. [pid 18218 on line 93 of  
"/home/horde/imp/lib/UI/Compose.php"]

Under what circumstances this can happen.  I have actually locked  
'From:' address.


Regards,

Anant Athavale.

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