Ajax Webmail slow/not loading

[ui-isef]

The issue:

We are facing a somewhat strange issue regarding the Zimbra Ajax webmail interface. Sometimes it loads, although most times it won’t (the html one always loads).

Most of the times it gets stuck at the loading screen or it just displays a white screen. This only happens on windows and macOS, linux clients load flawlessly.

It’s also worth mentioning that if you input a wrong password it won’t get stuck and will refresh the login.

What we tried:

We have been checking the different logs on the server either those on /var/log/ and those on /opt/zimbra/log/ to no avail.

We tried almost all the suggestions and fixes found on this and other forums, also re-installed not only Zimbra but the whole OS, not only once, but twice, always running into the same issue with Ubuntu Server 16.04LTS, 18.04LTS and CentOS 7 with no luck.

Our configuration:

Zimbra version: 8.8.15 GA 3869

DNS configuration:

-server.domain.com (this server) (A record) -subdomain.domain.com (the (sub)domain this server uses, the MX record in this subdomain points to server.domain.com)

IP configuration:

The server has a private IP (192.168.100.11), this being the case we had to install dnsmasq (config. pasted below) and edit the /etc/hosts file (also pasted) so it would work.

Configuration file for /etc/dnsmasq

Code: Select all

server=8.8.8.8
listen-address=127.0.0.1
domain=subdomain.domain.com
mx-host=subdomain.domain.com,server.domain.com,0
address=/server.domain.com/192.168.100.11

Configuration file for /etc/hosts

Code: Select all

127.0.0.1 localhost
192.168.100.11 server.domain.com server

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback localhost
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

Other:

During the installation process the installer throws this error, which we solved this way:

Code: Select all

DNS ERROR resolving MX for server.domain.com
It is suggested that the domain name have an MX record configured in DNS
Change domain name? [Yes] yes
Create domain: [server.domain.com] subdomain.domain.com
        MX: server.domain.com (192.168.100.11)

        Interface: 127.0.0.1
        Interface: ::1 
        Interface: 192.168.100.11
done.

[Lewis-H]

Login to Zimbra Admin, search for and edit the problem mailbox.
Whilst editing the mailbox go to Preferences and under General Options change the “Initial Mail Search” to in:sent (from in:inbox). This will temporarily fix the loading error and should allow you to login to the mailbox.
Zimbra Admin
Login to advanced webmail as the user. Look for and remove broken shares in Contacts, Briefcase, Mail, Calendars etc. Fix these broken shares.
Whilst still logged into Webmail, change your View settings to the opposite of what they are currently set to and then revert it back to how it was. For example, if the setting is “By Message”, change it to “By Conversation”. Then set it back to “By Message”.
Whilst still logged into Webmail, go to Preferences -> Mail and set the “Default Mail Search” back to in:inbox. Alternatively this can be changed in Zimbra Admin like it was in Step 2.

Logout and login to advanced webmail to confirm the loading issue is resolved.

[ui-isef]

Hello and thank you for answering us, we have tried that steps and just after changeing “Initial Mail Search” to in:sent (from in:inbox) we faced the same problem when logging to the advanced webmail as the user admin, which is the one we are testing and if we create a new one, it presents the same problem on a fresh installation.

If you require further information so that we can find a solution just let me know and I will post it here.