If a incoming Mail is delayed by Grey listing, this is not viewable in the Mail Manager. This is a Problem in Environments where End users really use the End User Portal for tracking their Mail.
In the End it has to be reviewed by the Admin again because you can only find out these Mails in the smtp-proxy Logfile.

I would suggest to implement a "maximum-transmission-attempts" counter that bounces the mail if sending has *successfully* begun and has been aborted more then ... lets say 10 times.

It would be helpful to define which routes are pushed to the SSL clients AND define the desired Metric to the route. I's needed when clients open the tunnel in the internal network and you don't want the traffic to go through the tunnel instead of the local NIC.

It would be nice to be able to add a VLAN as an additional address on an existing interface that is already in use.

The proxy doesn't seem to be able to apply any default DNS domain suffixes when doing a lookup. So if a user supplies a short DNS name in the URL, the proxy fails to find the page. Granted, this is only an issue if the proxy is used for internal sites, but I have seen many cases where this has been true now.

It would be nice to sort reports/statistics by User Agents.

1. You'll be able to only look at real users - Software Update Agents wont be displayed
2. You have the chance to find unwanted Devices in an easy way
Maybe it will make sense to add this also to the filters section. even if I know that you can fake your Browser Agent - as I do exactly now ;-)

It would be nice if you could pass options to the SSL VPN Client installer, such as
auth-nocache etc....

Please make QoS through a bridge work, that we can guarantee or limit bandwidth for applications.

Some isp's offer multidrop pop3 accounts. Basically one acount downloads all the messages from the pop3 server

Using a special marker mail should be disallowed if encryption/signature are not possible.
This should result in an NDR - "mail not send - encryption not possible"

In my opinion its useful to receive a Non Delivery report for outgoing sended emails. Blocked file extensions like .exe or .bat will block ANY directions of mails (extern to intern and also intern to extern).

These messages will be quarantined however internal users will not receive any information about that like an NDR. He belief, that the mail was delivered correctly.

It's important to have a chance in big customers the chance to route authentication process in base of domain name. it would an improvement about what there is already available. Example: users@gabriele.com will be authenticated by radius on server1; if authentication fail, users@gabriele.com will be authenticated by Active directory on server2. ecc.

Very efficient in big environment.

Can we have an English GB setting in this version please, so that the dates in the reports are shown the correct way round and words are spelled correctly like Organisational.

(I know there are more yanks out there than us brits, but we did invent the english language)

Currently Email Relay checks for allowed users and Host based, in both cases the user name or IP address can be spoofed or hijacked by a spambot, it would be great to have more granular checks such as that the user allowed to relay should send with the same account and as well limit maximum number of emails per sender.

Implement a Dropbox (https://www.dropbox.com/ and similar) filtering and scanning functionality for those that use this type of exchanging files.

Current SMTP database log only allows 30 days retention. Many organizations will have a one-year retention policy.