You might not have seen but a good server power supply supplies enough current to the parts to ensure smooth operation. The reliability will greatly reduce downtime. The power supply generates a lot of heat which is not healthy to a server. Thus, manufacturers introduce fans to reduce the heat to prolong life span.
Some use 2 fans and some use bigger fans due to its size. Hence, it is different for a 1U server and 2U server power supplies. Size is not the crucial factor to determine how fast you can bring down the temperature but CFM. CFM stands for cubic per feet, the airflow is the crucial factor to reduce the heat. Usually, the higher CFM spins faster, hence more noise is generated but not the size matter.
There are brushless and ball bearing fan. The later lasts longer, bettter MTBF compared to a brushless fan. Of course, they are many other components like capacitors are crucial too. So, if the power supply is cheaper than usual, either it is an imitation of a certain brand, pre-owned or its components’ price are lower. These are the power supplies you should avoid.
Many bought VPS, thinking it is a server. But until……. Yes, someone is telling you are still sharing a server. Huh? am I? Yes, in the web hosting market a server may cost you a few hundreds a month, a VPS may cost you as little as $10, it will make no sense if some hoster is selling a server at $10. It is never possible.
So, what is a VPS? VPS shares a server and the server is partitioned into a few VPS. Sharing resources like CPU, Memory and even operating system. Alright, it is sharing, isn’t the same as shared hosting?
Not exactly, even they are sharing a server but overheads on VPS is still higher. VPS has its own operating system, control panel and a dedicated IP. Don’t get me wrong, shared hosting user gets or an option for dedicated IP but control panel is shared for sure.
So VPS is better? It may not the case if the hoster uses an operating system like ClloudLinux they can limit the usage of resources of one user sometimes not advertised. As such, User can decide to choose a VPS with greater resources for better performance. But if the hoster is not doing this, and the server is not overpopulated, shared hosting can be a better performance than a VPS. A shared user can consume what is available since there is no limitation.
Thus CloudLinux is a popular choice to hosting providers sell Shared Hosting because it will throttle your usage as soon as you hit the limit.
Another reason is dedicated IP is available out of the box for VPS, there is no additional cost. So, you are sharing the same IP address with others especially good for outgoing email because of RBL.
Resell web hosting space is also the reason of buy VPS, instead of a few shared hosting accounts, you can administrate your own customers, their control panel accounts, FTP accounts etc.
Most VPS has the greater room of expansion. You can upgrade the resources like RAM, CPU or disk place and some even let you choose between SSD or the conventional hard drive.
I personally like VPS for its flexibility. I move an instance often, thus portability is important. Currently, our VPS offers this and it is easy to back things up or roll back especially they are your Sandbox. Basically, I use them for my own reason. How about you?
Ever since there is virtualization especially these few years, your IT team might have been bothered by this question. To virtualize a server or….? The answer is depending. Depends on? Clearly, there are more advantages to virtualize; example license of the software is cheaper, you can install more than one instances on the same server, a virtual switch, it is portable etc.
However, there are a few things to consider that virtualization might not work for you. If you need to split the instances for different departments and it has total privacy. Virtualization does not give you true isolation, there is risk your virtualized server is accessible through the underlying virtualization OS.
Disk IO is started to divide with the number of guest machines you have deployed. The greater the number of guest machines, the slower the disk IO. If you are still using hard disk storage, this is a crucial factor for the SQL database to some.
Failure risk – if your server has failed due to hardware, you might have more than one servers are failed if you virtualized. Especially to those do not have spare resources or a virtualized cluster. Not for dedicated servers, if one failed, the rest will continue to work.
If your guest machines are not paravirtualized, there is a performance overhead, For example, a true hardware ethernet will perform 2 ~4% better than a virtualized network card.
Some software makers have realized they are missing the virtualization segment and have made changes from processor count to core count license but the end of the day virtualization will save you money if you environment permit you to do do.
Many have not understood what is a snapshot? What are the differences? Which is better? Today, we are here to explain to you the differences, the pros and cons of the backups and the snapshots.
Snapshot is only available to a VM. Whether they are called VPS or something else. If the instance is virtualized, a snapshot is possible. Backup is installing an agent into the guest OS or the dedicated server, transfer the partition or files into a backup storage device.
Snapshot takes an image of the instance of its current state and dumped into a compressed file format like LZO. It is only possible to restore the entire VM. to restore files, you will have to extract files after you have restored the VM to another instance which is very time-consuming.
However, you can restore files from a backup. Even a bootable partition for some backup solutions. To restore a partition, you must have a temp portable partition on the memory to restore the restored bootable partition backup. This is a very slow process especially the restoration involved a huge partition.
Files restoration is the fastest and if you need to roll back the entire server, a snapshot restoration is much faster than restoring a bootable partition. However, if your backup retention is longer, you will need lesser space on your backup devices.
Most snapshot use NFS. It is cheaper to build an NFS storage than a proprietary backup solution. Nowadays, VM snapshot uses LVM-Thin to conserve disk space, it helps reduce disk space usage significantly. There is a drawback using LVM-Thin, the server must have a faster write and read space especially restoration, otherwise, it will affect the speed on other guest machines on the same server.
DKIM has been popular to ensure email delivery, especially for bulk senders. You can enable DKIM signing on all your outgoing emails. The feature is handy for all SmarterMail administrators. The feature is located in Domain settings.
Create and copy the DKIM keys into your domain DNS txt record.
For an extra layer of account protection, you can enable 2FA authentication un SmarterMail. Yes, it is part of Smartermail, not an addon, and you do not pay this feature. Your webmail is even more secure than before. The figures will show you how to enable 2FA authentication in your account settings.
This is essential for all. When someone is asking you to check email header? Or the sender? The most common mistake is looking at the email itself and provides you with the screenshot of the sender, the recipient, the subject, date and time.
This not the email header and they should look like this;
Received: from mx67.antispamcloud.com (mx67.antispamcloud.com [220.127.116.11]) by mail.vastspace.net with SMTP
Thu, 24 Jan 2019 22:20:45 +0800
Received: from mta-d-130-99.infusionmail.com ([18.104.22.168])
by mx67.antispamcloud.com with esmtp (Exim 4.89)
for firstname.lastname@example.org; Thu, 24 Jan 2019 15:20:37 +0100
Received: from web-camp-022 ([10.128.0.187])
by cmsmtp with ESMTP
id mfrtgMALnAUyumfrtg68ym; Thu, 24 Jan 2019 09:20:33 -0500
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=infusionmail.com;
s=dkim1024; t=1548339633; bh=T8e73Ytejwe3n/oEKLULhvvQ35Q=;
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=linksmanagement.com;
Date: Thu, 24 Jan 2019 09:20:29 -0500 (EST)
From: LinksManagement <email@example.com>
List-Unsubscribe: <https://lmmn.infusionsoft.com/app/optOut/noConfirm/64878116/c0481908947e63fc>, <mailto:firstname.lastname@example.org>
Received-SPF: pass (mx67.antispamcloud.com: domain of infusionmail.com designates 22.214.171.124 as permitted sender) client-ip=126.96.36.199; email@example.com; helo=mta-d-130-99.infusionmail.com;
X-SPF-Result: mx67.antispamcloud.com: domain of infusionmail.com designates 188.8.131.52 as permitted sender
Authentication-Results: mx67.antispamcloud.com; dmarc=pass header.from=linksmanagement.com
Authentication-Results: antispamcloud.com; spf=pass firstname.lastname@example.org; dkim=pass header.i=infusionmail.com; dkim=pass header.i=linksmanagement.com
X-Spampanel-Evidence: Combined (0.50)
The header provides you with details of the email received. This is useful when if possible to find out the real sender, for example, you have received a spoofed email or blacklist an email server from sending you spam emails.
Today, we are going to show you do it with Outlook, Thunderbird and SmarterMail webmail. It is easy for Thunderbird and SmarterMail webmail users. There are more steps and complicated for some to get this option.
We show you on how for Thunderbird email application; Just go to the email, under more to view the source.
SmarterMail has the view header option in Webmail too. Go to that email, more option is the icon with 3 dots, then view header.
It is a bit more steps for Outlook. But you only do it once to get this option permanently. Follows these steps. You need to go option from your file tab, add the message option to one of the new tabs. Once it is added, the message option will be permanently available for all emails.
I have dealt with web hosting for many years now. SmarterMail is the only email server software comes with IDS. In case you didn’t know what is IDS? IDS is normally found in firewall known as intrusion detecting system. IDS has a set of rules if any connection has violated the rules, mitigation will kick in. The serve to minimize the risk of a server’s attack or hack.
SmarterMail as this to stop abnormal activities, like attempting to log in with failed passwords known as brute-force or similar. This has greatly reduced a compromised email account or server’s abuse. Base on my experience, SmarterMail email server has very low a compromised email account uses to send spam emails. Thanks to the IDS in SmarterMail.
Many asked me this question, Is SmarterMail good? How good is good? I have used many email server software for the last 25 years. SmarterMail gives me the reason to acquire partnership. NOT that I said good because I’m selling them but the other way round.
I can still remember it was version 2 when I know the existence of SmaterMail through Plesk. It works on Windows Server and it has given me the perception it was a heavy software and it does simple email function and full stop.
Since then I didn’t pay much attention until version 13 or 14. I have SmarterMail has very intuitive GUI especially the Webmail. Coincidentally, I was turned down by the free webmail offer in many control panels. I was looking for something better but unfortunately. it runs only on a Windows server.
So, this is when I have asked my client to split their website and emails, rather you are putting them int the same server. Yes, you can do that and in a way, you are reducing your risk by having these functions on 2 separated servers. Of course, now can easily use SmarterMail as your email server while you can run your website and Linux Apache web server.
I have noticed those on SmarterMail has high retention rate than others. That’s mean to say, customers are satisfied. And I have noticed many have used webmail and the population on mail client applications like outlook has dropped. I personally use them, the webmail has many good features and it is easy to use.
For those managing a SmarterMail email server will agree with me. If you have administrated other email servers, you will find SmarterMaill is a breeze, it is so much easy to understand and operate. Even you do have a technical background, probably some guidance may do the job.
SmarterMail is built with IDS. We have yet to find any email server software come with an IDS. Brute-force is one common problem for all and SmarterMail has this protection and automatically block unwanted access. Not forgetting the anti-spam, anti-virus, exchange sync add-ons available to enhance users’ experience.
I’m very happy with SmarterMail and proud to be their partner. I have servers are serving a few thousand mailboxes, they are hardly giving me problems. It saves me a tremendous amount of time and efforts in administrating these servers. I love SmarterMail.