SMTP behavior: 553 5.5.2 Bad command format(h)

Wed Mar 31 23:16:41 UTC 2004

WTF? can anyone please explain me why must I enclose my 
address between the "<>"?

220 cassiopeia.remeyewear.com ESMTP service
helo me.intercom.com.sv
250 cassiopeia.remeyewear.com talking to ip168-243-227-1
.243.227.171])
mail from:postmaster at intercom.com.sv
553 5.5.2 Bad command format(h)
mail from: postmaster at intercom.com.sv
553 5.5.2 Bad command format(h)
mail from:<postmaster at intercom.com.sv>
250 OK - mail from <postmaster at intercom.com.sv>
quit
221 cassiopeia.remeyewear.com connection

Connection to host lost.

-- 
Miguel Mata-Cardona
Intercom El Salvador
mmata at intercom.com.sv
voz: ++(503) 278-5068
fax: ++(503) 265-7024