the total error is below when i am sending mail through exim
LOG: MAIN
<= root@ U=root P=local S=345
[root@localhost ~]# delivering 1QoU2R-0001ox-L0
T: remote_smtp for may@gmail.com
Connecting to ASPMX.L.GOOGLE.com [74.125.127.27]:25 ... failed: Connection timed out (timeout=5m)
LOG: MAIN
ASPMX.L.GOOGLE.com [74.125.127.27] Connection timed out
LOG: MAIN
== may@gmail R=dnslookup T=remote_smtp defer (110): Connection timed out
LOG: MAIN
** may@gmail.com: retry timeout exceeded
LOG: MAIN
Error while reading message with no usable sender address (R=1QoU2R-0001ox-L0): at least one malformed recipient address: root@ - domain missing or malformed
LOG: MAIN
Process failed (1) when writing error message to root@ (frozen)