You need to contact Zimbra Sales if you're interested in purchasing the product, these are Community Forums and we do not answer questions about product purchases.

Did you try a search first? These are the results of a search, try some of the suggestions: https://www.startpage.com/do/dsearch?query=Starting+ldap...Done.+Failed.+Failed+to+start+slapd.+Attempting+debug+start+to+determine+error.+5c907614+backend_startup_one+%28type%3Dmdb%2C+suffix%3D%22%22%29%3A+b...

Have you read the Product Documentation and the Release Notes for the product? You'll find the answers in those or even on the download page or in a forum search.

Patches are not released via the product downloads page, they are released an update via the Zimbra Repository in your linux distribution. You need to look at the patch release notes in the wiki for further information.

According to gmail your server has a poor reputation, if that's what they think and you see differently then there's nothing anyone can do except gmail. This isn't a problem with zimbra, it's supposedly your server and you've not provided any information to show otherwise. Try some of the other onli...

<mathayoty2018@gmail.com>: host gmail-smtp-in.l.google.com[64.233.167.26] said: 550-5.7.1 [194.20.30.10 19] Our system has detected that this message is 550-5.7.1 likely suspicious due to the very low reputation of the sending 550-5.7.1 domain. To best protect our users from spam, the message has b...

Hi David Finally sorted it out. Well done on your analysis of this problem. Post-game analysis: - I'd assumed that settings for abc.net would apply securemail.abc.net[/quote]Although I don't use this feature I thought I'd have a look at it and your solution fixed it for me, as well. Adding the setti...

That 'how to' contains instructions on doing an update to the operating system, that's never a good idea. You've also not mentioned if you've done that and nor have you mentioned which versions of Ubuntu were involved in the upgrade - I believe that Zimbra has always discouraged an in-place operatin...

yohoho wrote:Problem solved, turns out you need to reverse DNS. No matter what, or it will not work.

Of course you do, it's a requirement for a mail server.

You really should have your server behind a firewall or NAT router.