Mail Can't Send to Outside/Outbound mail

I have some problem about mail zimbra,

like this

and smtp_main.log like this example , 

2340 2 queue-runner processes running
24412 locking /sdisk/spool/output//db/retry.lockfile
24412 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
24412 Considering: galihaes5@gmail.com
24412 unique = galihaes5@gmail.com
24412 galihaes5@gmail.com: queued for routing
24412 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
24412 routing galihaes5@gmail.com
24412 --------> router_for_notifications router <--------
24412 local_part=galihaes5 domain=gmail.com
24412 checking "condition" "${if and{{bool_lax{0}}{bool_lax{${if eq{$acl_c1}{1}{1}{0}}}}}}"...
24412 router_for_notifications router skipped: condition failure
24412 --------> batv_redirect router <--------
24412 local_part=galihaes5 domain=gmail.com
24412 checking domains
24412 batv_redirect router skipped: domains mismatch
24412 --------> static_route_hostlist_for_email router <--------
24412 local_part=galihaes5 domain=gmail.com
24412 checking "condition" "${if match_address{$local_part@$domain}{+hostlist_route_emails}{1}{0}}"...
24412 static_route_hostlist_for_email router skipped: condition failure
24412 --------> static_route_hostlist router <--------
24412 local_part=galihaes5 domain=gmail.com
24412 checking domains
24412 static_route_hostlist router skipped: domains mismatch
24412 --------> static_route_bymx_for_email router <--------
24412 local_part=galihaes5 domain=gmail.com
24412 checking "condition" "${if match_address{$local_part@$domain}{+mx_route_emails}{1}{0}}"...
24412 static_route_bymx_for_email router skipped: condition failure
24412 --------> static_route_bymx router <--------
24412 local_part=galihaes5 domain=gmail.com
24412 checking domains
24412 static_route_bymx router skipped: domains mismatch
24412 --------> static_route_bydns_for_email router <--------
24412 local_part=galihaes5 domain=gmail.com
24412 checking "condition" "${if match_address{$local_part@$domain}{+dns_route_emails}{1}{0}}"...
24412 static_route_bydns_for_email router skipped: condition failure
24412 --------> static_route_bydns router <--------
24412 local_part=galihaes5 domain=gmail.com
24412 checking domains
24412 static_route_bydns router skipped: domains mismatch
24412 --------> smart_host_route router <--------
24412 local_part=galihaes5 domain=gmail.com
24412 checking domains
24412 checking "condition" "0"...
24412 smart_host_route router skipped: condition failure
24412 --------> default_mx_router router <--------
24412 local_part=galihaes5 domain=gmail.com
24412 calling default_mx_router router
24412 default_mx_router router called for galihaes5@gmail.com
24412 domain = gmail.com
24412 set transport remote_smtp
24412 queued for remote_smtp transport: local_part = galihaes5
24412 domain = gmail.com
24412 errors_to=NULL
24412 domain_data=NULL localpart_data=NULL
24412 routed by default_mx_router router
24412 envelope to: galihaes5@gmail.com
24412 transport: remote_smtp
24412 host gmail-smtp-in.l.google.com [2404:6800:4003:c03::1a] MX=5
24412 host gmail-smtp-in.l.google.com [74.125.24.27] MX=5
24412 host alt1.gmail-smtp-in.l.google.com [2607:f8b0:400e:c00::1b] MX=10
24412 host alt1.gmail-smtp-in.l.google.com [173.194.202.26] MX=10
24412 host alt2.gmail-smtp-in.l.google.com [2607:f8b0:4023:1004::1b] MX=20
24412 host alt2.gmail-smtp-in.l.google.com [142.250.115.26] MX=20
24412 host alt3.gmail-smtp-in.l.google.com [2607:f8b0:4003:c15::1b] MX=30
24412 host alt3.gmail-smtp-in.l.google.com [64.233.171.26] MX=30
24412 host alt4.gmail-smtp-in.l.google.com [2607:f8b0:4001:c56::1b] MX=40
24412 host alt4.gmail-smtp-in.l.google.com [142.250.152.26] MX=40
24412 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
24412 After routing:
24412 Local deliveries:
24412 Remote deliveries:
24412 galihaes5@gmail.com
24412 Failed addresses:
24412 Deferred addresses:
24413 T: remote_smtp: for galihaes5@gmail.com
24413 locking /sdisk/spool/output//db/retry.lockfile
24413 Relate with Firewall rule id: 99
24413 LOG: MAIN
24413 H=gmail-smtp-in.l.google.com [2404:6800:4003:c03::1a]:25 Network is unreachable
2021-04-30 10:48:32.295 [24413] 5dSz5A-uRsR9m-0t H=gmail-smtp-in.l.google.com [2404:6800:4003:c03::1a]:25 Network is unreachable
24413 locking /sdisk/spool/output//db/retry.lockfile
24413 Relate with Firewall rule id: 99

and this is my firewall rule, 

i use sophos firewall XG450 with fimware

what shoud i do ? to trace the problem ,