Some problem with filter

[lexamad]

I have a problem with MS Exchange server imap filter conditions SentOn (and others with date)

when i try
var msgs = imap.SearchMessages( SearchCondition.SentOn(new DateTime(2015, 09, 11)));

occurs error "xm004 BAD Command Argument Error. 11"

But this is example work with imap.gmail.com.

I found this article
The SEARCH command (SENTSINCE, SINCE, SENTBEFORE, SENTON, BEFORE) works only with with a date, not a date + timestamp.
http://stackoverflow.com/questions/22392120/python-imap-mail-seach-with-minutes

May be you change, for example here
in AE.Net.Mail.SearchCondition
public override string ToString(){
....
if (value is DateTime)
{
if (Field.Equals(Fields.SentSince)
|| Field.Equals(Fields.Since)
|| Field.Equals(Fields.SentBefore)
|| Field.Equals(Fields.SentOn)
|| Field.Equals(Fields.Before)
)
value = ((DateTime)value).ToString("dd-MMM-yyyy", _enUsCulture);
else
value = ((DateTime)value).GetRFC2060Date().QuoteString();
}

}

Thank you