Outgoing Mail Server For Webmail – In this design we will talk about changing incoming mail server or deleting MX. Our goal is to protect against email loss while in transit. we need two mail servers for design. We define one DNS as primary or primary server and the other as secondary or backup MX. if the primary server fails, the secondary server receives all mail.
When the sending server sends email to the receiving server, it chooses the domain’s primary MX server. Email delivery usually fails if the primary server is unavailable. But if there is a backup MX, the backup MX server will receive the email. Adopting Backup MX eliminates one inbound email failure scenario.
Outgoing Mail Server For Webmail
Note that the backup MX does not store any mailboxes, so it cannot deliver mail to mailboxes, instead it stores mail in its queue and waits for the primary mail server to come back, and if it does, it delivers all mail. delivered to the main server. one for inbox delivery.
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In the diagram we have declared two DNS servers as Primary MX and Backup MX.
In this design, our main MX server handles all email activity for the organization, it is not only the MX server but also our outgoing server, email storage, POP/IMAP and webmail server. Thus, all email activities in the organization are handled by the primary. If the primary MX server fails, the backup MX server will receive all mail. But it does not provide other services.
There are usually two types of email delivery, local delivery and remote delivery, the main MX server accepts mail for local delivery as it delivers all user data and mailboxes. On the other hand, the Backup MX server only accepts mail during a crisis, receiving mail and queuing for remote delivery. because the backup MX has no users or inboxes to deliver. it waits for the primary MX server to return and then delivers all queued mail to the primary server.
1. here we have two servers named “mailx1”. and “mailx2.” both must have a common IP and be connected to the Internet.
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2. both systems need to be able to receive mail from the internet, so we need to set up an MX record on our DNS server. we need to assign MX with different Priority values but we can assign the same priority to both servers but for this load balancing scenario I will describe in the last article that MX priority is the main issue in this design let’s say
This priority value means that when the sender’s mail server requests our domain’s mail server address, our DNS server will respond with the above 2 server names and deliver the mail to the lowest priority server with the priority value. The rule of mail servers is that if the primary server is down, the sender will deliver mail to a higher priority mail server.
This design is more practical than the previous one because most organizations do not provide two dedicated servers to host the mail server. In this design, our backup MX server is located in an ISP environment, most ISP companies or hosting providers provide email services, or we can rent a dedicated VPS from them to store our emails for this temporary period.
As for the storage of mail on the backup server, we have two options: we can configure Backup MX to store email in a queue, or we can store emails directly in its memory, which is what we need to do if we want to save email Backup MX memory. configure the server with a configuration called “Domain Catchall Address” that will receive all emails and store them in one common email address for the whole domain, all recipient mail will be stored in this one mailbox on the backup MX server, In this case, while the Backup The MX server is alive, not trying to deliver mail to the primary server, the primary server is responsible for retrieving all email from the remote mailbox and delivering it to the local users inbox. In a Linux environment, this type of setup is done with two popular email programs, fetchmail and procmail, and I will try to show this configuration later. Although businesses tend to use multiple social media, email marketing is still the best way to communicate with brands. clients. However, most people don’t have the time or technical knowledge to manage a mail server, let alone manage its potential threats. That’s why mail server management is so popular despite the cost of outsourcing. But with a mail server, you have a hosting panel that connects the system services and the user. So you can manage mailboxes on your website domain yourself, manage mailing lists and much more. Let’s discuss what you can do with mail server management.
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Works with your mail server software, the main email service provider for mailboxes and mailing lists. Once it’s set up, the mail server will be automatically configured and you’re ready to go. However, we recommend that you review the default settings to make sure they are appropriate for your company’s needs.
When it comes to general settings, we recommend ticking “Enable mail management features”. This allows users to create personal email accounts and use the mail services provided by the managed mail server. They can also change the installed mail server and the installed IMAP/POP3 server with the appropriate links to the Installer GUI page.
You should also consider limiting the size of email addresses and incoming email through your server. By entering a value in KB in the Maximum message size field. Linux users can change the default mail server restrictions so that users can connect to the server at the same time.
Users can also change the limit on the number of connections from a single IP address. This is useful because low thresholds can affect mail server connections from multiple computers behind the firewall. Or users with multiple email accounts.
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Users can also change forwarding options through mail server management. When you select a closed relay, the mail server accepts messages only for users who have mailboxes on that server. We do not recommend it for businesses that need to communicate with customers. Because clients cannot send email through your outgoing SMTP server.
A very good opportunity for such companies is to switch after authorization. With this option, only your customers will be able to receive and send emails through your mail server. Also, leave the Require Authorization option selected, as this allows you to choose between two different authentication methods.
POP3 blocking time is another option. However, it requires users to successfully authenticate to the POP server first. After that, they will be able to receive and send emails through the mail server for a certain period of time. There is also SMTP authorization, if the email is sent to an external address, your mail server requires authorization.
We recommend that you enable restrictions on outgoing emails. This prevents hackers from sending spam emails from the server. And this is very important for companies that deal with a lot of email marketing campaigns.
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In addition, mail server administration users can also configure settings such as allowing scripts and users to use Sendmail (Linux only). Users of script and system subscriptions can send emails using Sendmail even if they exceed mailbox and domain limits.
Users can also choose to display reports based on the most recent statistics (display period). Ideal for businesses that send large volumes of mail. Attempts to exceed the outgoing mail limit during this period will result in a warning. You can also send each email notification (specify period). In this way, the administrator knows that the outgoing mail limit is approaching.
Users can also choose from many possible options other than a mail server management system. This includes changing your antivirus settings and installing spam protection – blocking potentially malicious emails from accessing your servers. Qmail mail server users can also choose the mail account format for their POP3/IMAP mail accounts.
Email may look simple, but it’s more than meets the eye. Take a deep look at your mail server management systems for improvement. Such tools make this seemingly daunting task easier and more convenient. This allows businesses of all sizes to enjoy greater control and flexibility over their mail servers.
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