[SOLVED] Not able to sendmail with Ms.Outlook at home.

[Wilson_Lee]

hi,

I setup zimbra server version 5 on RHEL5 server. Both software are 64 bits.
Everything is working fine if I work at office. I able to send and receive mail with my outlook 2007.

But when at home, I not able to send mail and got error. Anyway I able to recieve mail.

"Task-sending" report error (0x800CCC0F)

my zimbra mail server is setting up behind a firewall and i use firewall to publish the server to internal..... Port 110, 25, 80 will be forward to my zimbra server.

my MTA setting is 127.0.0.0/8 192.168.0.0/24


I need help to solve this problem as my users will connect back from home, they need to be able send and receive mail when they are at home.

[Wilson_Lee]

I found that is local ISP to block port 25.