>I have two comments. In the strtran() line, your syntax is wrong, you use "+" instead of ",". Secondly you should avoid macros whenever possible, they can cause unpredictable results, especially if you have spaces somewhere. This code does the same job.
>

hh = forceext("d:\outmail\out" +chrtran(ttoc(datetime()),' :-',''),'dbf')
>select outmale
>copy to (hh)

>
>>hh="d:\outmail\out"+TTOC(DATETIME())+".dbf"
>>hh=STRTRAN(hh," "+"")
>>hh=STRTRAN(hh,":"+"")
>>hh=STRTRAN(hh,"/"+"")
>>
>>
>>the value of hh is d:\outmail\out07012015084913.dbf
>>
>>SELECT outmail
>>
>>COPY TO &hh
>>
>>I get invalid path or filename - what am I doing wrong?
>>
>>d:\outmail dirctory exists exists as does the file outmail

I still get the error