Mailstore Gateway

[Faustina Bartsch]

This complete archiving method is achieved by using journaling where emails are archived the moment they are received or sent, and then copied to the journal mailbox via a rule configured by the admin in Microsoft 365. Microsoft restrictions mean that if you decide to use this method of archiving, you would normally have to set up an external mailbox (i.e. outside of your Microsoft 365 instance). This is where our free add-on program MailStore Gateway comes into play, which takes the place of the third-party journal mailbox that would otherwise be required.

Simply download the MailStore Gateway set-up file, run the file and follow the on-screen guidance. When the MailStore Gateway configuration tool opens, you have the option to modify several basic settings and configure the necessary settings for launching the MailStore Gateway service. The information held in the field Email domain is the domain part of the individual email address. To allow MailStore Gateway to receive emails from other email servers (e.g. Microsoft 365, Google G Suite, etc.), the email domain you have configured must be DNS-resolvable.

In order to set up encrypted communication channels between clients and other servers, MailStore Gateway uses what are known as TLS certificates. The administrator can choose an existing certificate from the certificate memory, create a self-signed certificate, or import a certificate from a file.

Please note: keep the password in a safe place as it is not saved by MailStore Gateway and cannot be recovered. If you lose it, there is no means to access the existing contents of the mailbox again.

Hello,
I am confused about use of Mailstore Gateway Product. I need to setup email archive for employees . I got to know I can set mailstore server for that. So what is role of mailstore gateway. Can I use it instead of Mailstore Server.

Let's Encrypt is a free, automated, and open certificate authority, trusted by all major web browsers and operating systems. Many large, well known sponsors from the IT industry support Let's Encrypt's effort to help making the internet a safer place.

For the MailStore Gateway computer, a public DNS record (A or CNAME) must exist and point to a public IP address.The MailStore Gateway computer must be accessible from the Internet on TCP port 80 (HTTP) for Let's Encrypt's automatic domain approval process. A port forwarding on your firewall or gateway might be necessary. Since Let's Encrypt validates from different IP addresses, such a firewall rule cannot be limited to certain source IP addresses.

The most common scenario for a MailStore Gateway installation is on a local network inside the organization's premises. Typically, the MailStore Gateway computer has a private IP address (e.g. 192.168.0.10) and the Internet connection is established through a router which masks all internal IP addresses with its own external IP address assigned by the ISP. This is known as Network Address Translation (NAT).

The MailStore Gateway tests the settings against Let's Encrypt's staging environment. If an issue occurs, MailStore Gateway will show a warning. Please review the log output, resolve the issue and try again.If the test was successful, the MailStore Gateway will automatically request a certificate from Let's Encrypt's production system and confirm that setup was successful.The automatic renewal of Let's Encrypt certificates every 60 days is active as long as no other certificate is selected manually.

My ISP blocks port 25, so I'd like to setup a store and forward inbound and outbound postfix server (relay-server) that communicates with a mailstore server (mailstore-server), which is unable to receive or send directly to the internet.

I have read numerous articles and done a tonne of research on various options, but most options and articles talk to using the relay-server purely as an outbound sending server and with the mailstore-server being able to receive from the internet directly. I am struggling to find advice on how to get both working, with the mailstore-server using only the relay-server as the send and receive, and with store and forward functionality on the relay-server.

I assume the concept, from what I understand is: use Postfix on the relay-server and then Postfix and Dovecot server on the mailstore-server. The relay-server will have port 25 open for receiving and sending and also port 587, and the mailstore-server will talk to the relay-server on port 587 only.

I understand I will have to use authentication between the two servers to allow them send, but am confused on what to do as there is mention of LDAP, SASL and then individual user authentication per user/domain?

I would prefer for users to connect to the mailstore-server and send emails from there. I understand they could connect to the relay-server to send emails, but having them connect to the relay-server means they have to have specific logins there too. Which I would prefer avoiding the duplication.

I would like to have the simplest setup possible. Ideally, all users and mailboxes, with sending and receiving for users done on the mailstore-server, and then the relay-server is purely a smtp gateway back and forth for the mailstore-server, with the functionality to store mail if my home connection is offline for a bit. I understand I will have to update the sending domains for the relay-server if I add/remove hosted domains.

Virus Scanning and SPAM. Where should this be done? The intention is to use the smallest/cheapest server as the relay-server, something like a $5 vps server. Can I do the virus/spam protection on the server at home? Or must it be done/should it be done at the relay-server as mail is passing through? I see there are options like postgrey/sieve, etc too. Where are the best places to implement those?

I'd really like to try docker the entire solution and have come across the docker-mailserver ( -mailserver/docker-mailserver) concept. It looks good, but talks mainly to a full-fledged server and I am struggling to understand where to configure the specific options for the relay-server and the mailstore-server and how to configure them, as they aren't very specific about those and assume that users have an indepth understanding of all the terms and configuration options already, which I unfortunately don't. ?

Any advice or confirmation of the above points would be very much welcome, with any detail to help in the process. I'm happy to write up a blog or post on this, or post back a guide here as this has taken me long enough to achieve and I'm happy to share the assistance back.

I tried various methods but found the simplest way (that worked) was to use a script to create an aliases file (from ldap entries). There are various problems with this method. The main one being that the entries can't be of the simple form [email protected] because the gateway doesn't know where to send them. They have to be of the form: [email protected].

What I would like doesn't seem hard but I can't get my head around the postfix documentation. There seem to be various ways but none of them seem to work. Most of the examples I have found on the web assume the mail is going to end up on the server. I want a list of users somewhere, preferably of the form: user1, user2, etc rather than [email protected] (I can easily generate this list) and I would like postfix to forward all email to example.com to a particular server: ie realmailserver.example.com.

Regulatory pressures, loosened IT purse strings and the health of the larger enterprise content management (ECM) marketplace have created the perfect environment for e-mail & messaging management (EMM) vendors, and leading players are poised for a breakout year.

In a recent survey by IMERGE Consulting, more than 60% of IT and business professionals named e-mail and messaging as the most critical enterprise application, well above the next choice, database transaction processing (36%).

The technical challenges are significant, though. Imagine this: Large electronic document management systems may handle a few million documents, perhaps even tens of millions. But archiving all e-mails for seven years for an organization of 25,000 employees adds up to 4.5 billion documents. Just as a reference, as of a year ago, Google handled only 4.3 billion documents. So scalability is key.

To bring EMM capabilities to market, ECM and storage management companies have gobbled up several major e-mail management firms, and others have rushed to sign original equipment manufacturer (OEM) or reseller agreements. Now that most are there and can handle the basics of e-mail archiving, compliance is the watchword for 2005. And that's a higher bar. Once a violating message is received, it's too late to do anything about it. Or is it?

With MailRecall from Authentica , users can control what happens to an e-mail message after the fact. Organizations establish mail management policies that determine who can read a message, when they can read it and whether they can forward, copy or print the message. MailRecall messages can also have a predetermined expiration date assigned to them that appears alongside the message in the recipient's inbox. If a user decides to recall your message, all copies expire automatically--whether they are located on sender and recipient desktops, servers or even backup media. Some challenging records management issues arise with that new capability.

To achieve compliance on an even more proactive basis, leading-edge EMM vendors are offering e-mail message "pre-review," a utility that scans e-mail messages before they actually are sent, in a compliance staging process. After Sarbanes-Oxley and other tightened regulations, and with trial verdicts being tipped by e-mail content, managers are being held to higher standards of conduct. The importance of EMM is no longer debatable. The priority of features and how the systems are implemented, however, are hotly contested topics.

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