I'm having problems with slowness in sending e-mails via web in Zimbra Opensource 8.
When I send e-mail using the WEB it take to send the message and returns a screen saying that the Web server is slow to respond, but the e-mail and sent! It takes about 20-30 seconds for the success of sending.
The funny thing that this only happens if I WEB configure the account in a client e-mail the e-mails are sent quickly and smoothly.
Already deactivated the option of TLS in LDAP which greatly improved the speed of the server when a client sent directly to email, but the Web is still in trouble.
Excuse my English, but I think here is the only place I can find solution to my problem.