Hi,

I just finished replacing my mail server with the new one from CentOS 4.6 to CentOS 5.1. The mail are running smoothly with user able to send/receive mail from Outlook using IMAP or POP3 and Webmail locally. My problem is that when I am outside my network like in home, I cannot able to access the Webmail. In my prior mail server, it is ok. Is there anybody here have clues for me to look for? DNSReport states that my mail server was accessable. Please help. Thanks in advance for your help.

junji
aisalen.wordpress.com
Linux Registered User #253162
CentOS User



Send instant messages to your online friends http://uk.messenger.yahoo.com
_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

Jun Salen wrote:

Hi,

I just finished replacing my mail server with the new one from CentOS 4.6 to CentOS 5.1. The mail are running smoothly with user able to send/receive mail from Outlook using IMAP or POP3 and Webmail locally. My problem is that when I am outside my network like in home, I cannot able to access the Webmail. In my prior mail server, it is ok. Is there anybody here have clues for me to look for? DNSReport states that my mail server was accessable. Please help. Thanks in advance for your help.



Firewall? What have you done to try and find out what the problem is?
_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

>Firewall? What have you done to try and find out what the problem is?

I disable firewall and SELinux on mail server machine and the PIX firewall where the machine
connects to outside world allow port 80 and 443 just as before but still the problem persist.
I will try to up later the old machine and will check if the web mail becomes accessible and
then restore the new machine (this is in production only) again. This is to see if DNS is the
culprit, but I doubt it. Any more ideas guys? Sorry for the posting prior to this without the
subject. Tsk tsk.

Thanks,
junji
aisalen.wordpress.com
Linux Registered User #253162
CentOS User



Send instant messages to your online friends http://uk.messenger.yahoo.com
_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos

>I disable firewall and SELinux on mail server machine and the PIX firewall where the machine
>connects to outside world allow port 80 and 443 just as before but still the problem persist.
>I will try to up later the old machine and will check if the web mail becomes accessible and
>then restore the new machine (this is in production only) again. This is to see if DNS is the
>culprit, but I doubt it. Any more ideas guys? Sorry for the posting prior to this without the
>subject. Tsk tsk.Hi,

After trying to restore my old server today and test connecting to my webmail using http://, it also failed but connect using https:// was successful. Probably our PIX firewall has allowing connection to port 443 but not port 80. So in order to solve this, I reconfigure the mail server (Zimbra) to use mode "https" instead of "mixed". This solved my problem. The only way to access my webmail is through https but this was fine and is more secured. By the way, although I will be able to access our PIX, I do not have the guts in configuring it, to avoid problem since I do not know IOS yet.

Thanks,


junji
aisalen.wordpress.com
Linux Registered User #253162
CentOS User



Send instant messages to your online friends http://uk.messenger.yahoo.com
_______________________________________________
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos