None of that worked. I ultimately had to uninstall Zimbra Desktop entirely, delete the folder out of AppData and start over.

I'm going to add some pieces I found in log files that I was Googling, in hopes that someone else's Googling for this problem leads them to this thread. 2016-05-06 07:12:49,997 INFO [qtp509886383-3813:https://10.1.8.63:443/service/soap/SendMsgRequest] [name=mhammett@ics-il.net;mid=20;ip=10.1.8.66;ua...

zimbra@Zimbra8-Mailstore1:~$ zmprov gs Zimbra8-Mailstore1.ics-il.net zimbraSmtpHostname # name zimbra8-mailstore1.ics-il.net zimbraSmtpHostname: Zimbra8-MailStore1.ics-il.net zimbra@Zimbra8-Mailstore1:~$ zmprov gs Zimbra8-Mailstore2.ics-il.net zimbraSmtpHostname # name zimbra8-mailstore2.ics-il.net...

I moved from 7.2.7 on CentOS 5 to 8.6 on Debian 14.04. I had 2x LDAP, 2x Mailstore, 2x MTA and 1x Proxy. Now I have 2x LDAP, 2x Mailstore and 2x MTA\Proxy. Sending\receiving mail from accounts on either mailstore works fine via IMAP\SMTP. I can't get webmail to send anything out of any account I've ...

It didn't help.

It looks like I have to delete the account from Zimbra Desktop, then re-add it. I'm not looking forward to doing that for all of the accounts, so any tips on other means of resolution would be nice.

Did you get any resolution to these problems? I'm having the same thing now, but with Zimbra Desktop 7.27 and ZCS 8.6.

Thanks. I wasn't alerted to your response as I lost my subscription preferences during one of the forum migrations.

That's nearly what I did. I'm moving about 1.3M messages from the old platform to the new platform now.

Does the community know of anyone setting up an agent for LibreNMS or NetXMS?

I get that message every time I try to send a new message.

I did the "zmprov mcf +zimbraMailboxdSSLProtocols SSLv2Hello" as mentioned in https://bugzilla.zimbra.com/show_bug.cgi?id=96991 on both of my proxy servers and I'm still getting, "Password may have changed. Please go to edit screen of Account Setup to revalidate settings." I have...