Just sent via webmail to my GMail account and DKIM works for me:

Authentication-Results: mx.google.com;
dkim=pass header.i=@xxxxx header.s=xxxx header.b=xxxx;
spf=pass (google.com: domain of xxxx designates xxx as permitted sender) smtp.mailfrom=xxx

The SMTP service is the only way to receive any emails, as well as to send any emails. Disabling that service is the same as having no mail server at all. It is very common for login attempts to be recorded in the SMTP logs, there are always people trying to gain access to active servers. These atte...

Look at the SMTP logs for the relevant transactions. If the log indicates errors sending to the remote email servers then you can try and correct but, If the remote mail servers have accepted the mail, then there is nothing more you can do.

Why necro a 6 year old thread ? It's highly unlikely the OP is still awaiting an answer.

Cheers,
Brett

"Only send responses between these times:
Start
End"

Can't unfortunately do a screen grab from my remote server at the moment.

Hoodoo was the name of a previous skin. Try replacing that name with Mondo, which is the latest skin.

The server is doing exactly what it is meant to do to stop your server spewing spam all over the internet. If your server received emails from an external source that were actually destined for an external receiver, and passed them on without doing anything to stop that (such as requiring authentica...

Set the account you want to collect all the mail as the catch-all address for the domain. Right click the domain name in Domains under the post office and select the address there.

Cheers,
Brett

Unfortunately, although indexing started again after deleting the empty xml file, a little while later there was an exception and indexing stopped again: 2019-10-17 08:12:15,682 [26] ERROR - Failed to update index for andrew@KnowBase: background merge hit exception: _szq:C8676 _t0y:c1 _t11:c2->_t11 ...

You are missing the colon after X-SPAM-FLAG. Your criteria should be

X-Spam_Flag: YES

Cheers,
Brett

There is also the option of running MEInstaller.exe from the Bin folder and using the first and second options to reset file permissions. See if that works for you.

Thanks. The file was empty so I have deleted it and will see what happens next.

In MailEnable under Servers > localhost > System right-click on Services Status and select Stop All Services then, in Control Panel under Administrative Tools > Services, set all services associated with MailEnable to disabled (they are all named MailEnable ….).

The mailbox indexing service log starts with: 2019-10-16 05:39:58,100 [4] INFO - MailEnable Mailbox Search Indexing Service starting. 2019-10-16 05:39:58,241 [4] INFO - Started the initialisation processor. 2019-10-16 05:39:58,241 [4] INFO - Started the update processor. 2019-10-16 05:40:58,367 [6] ...

You could try something like Robocopy to transfer the files and select NOT to transfer security.

https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/robocopy