Zimbra Forums

Maybe some zimlets are trying to call port 80?

You could install Fiddler and trace the connection.

The trace should show all connections using HTTP rather than
I">HTTPS
I tested this against 7.x and didn't see any calls using HTTP in the connection with default enabled zimlets.

Maybe the sender's email signature contains some image stored on the zimbra users briefcase or something?
"View source" might reveal what is linking to the zimbra server from that mail.

Create another firewall rule and explicitly allow traffic from office network to zimbra host on port 80, place it on higher priority than the block 80 rule in firewall.

See if that speeds up the login.

LeoKurz wrote:What happens if the second (third, forth...) sever relays to the zimbra server? Is the mail rejected?

That mail will be treated like any other mail server which sends mail to your host.
You only need to specify one address there.

There's nice Lifecycle matrix which gives you dates like "General support ended".

I don't see any reason to install old products to new environments.

[quote user="arto"]Thanks phoenix. But i have correctly the reverse resolution for my MX. I think so... help[/QUOTE] If I'm reading that right, someone is using user.name@example.local as sender, and for good reason, your server doesn't like it. The sender needs to have valid address and s...

Maybe email signature?

8 rows of text containing 80 characters including row changes is 656 bytes.

[quote user="blason"].. for around 1000 users. First, Trying to build one server with 24 GB of RAM which will have all the components installed on same server, will this suffice the need and can produce the optimized result?[/quote] You need about 50-150mb/user memory for logged in users, ...

[quote user="stasouv"]messages should not be purged from server upon POP3 fetching[/QUOTE] If you send a postcard via land mail, the post office doesn't keep a copy from it if you lose it after you've received it. From POP3 RFC1939: POP3 is not intended to provide extensive manipulation op...

[quote user="shal"]Our IP and subnet of class C (!) is blacklisted. ISP does not provide a mail relay and we do not have another ISP. [/QUOTE] This is usually the case, when you have consumer-grade internet. Yes, the corporate line costs a lot more, but you should get an IP which isn't bla...