SMTP relay services are crucial for high deliverability and security for bulk email campaigns. While it can be complex to set up on your own, there are a few services that can make this much easier. Below are some of the best SMTP relay services on the market today, with details on their features and […]
The Best SMTP Relay Services
What is an SMTP Relay?
SMTP relays make bulk delivery much more reliable, but configuration and complexity can make setup difficult. Below, we’ll explain what an SMTP relay is, how it works, and how you can quickly set one up for yourself. An SMTP relay is a service that helps send emails from one server to another. It acts as […]
What is an SMTP Server?
SMTP stands for Simple Mail Transfer Protocol. It is the standard communication method for sending email over the Internet. This protocol allows email servers and clients to exchange messages securely and efficiently. It serves as the foundation of how emails are routed from sender to recipient. Without SMTP, email transmission as we know it wouldn’t […]
The Best Free SMTP Servers
Looking to start your email campaign, but are on a budget? Below are some of the best free SMTP servers that allow you to send completely for free, and grow into your email budget. 1. MailerSend MailerSend is a standout free SMTP server thanks to its simplicity, robust features, and focus on providing value even […]
The Best SMTP Servers for Email Marketing
Dedicated SMTP servers help email marketers take control of their deliverability and email reputation. However, finding the right SMTP server with the pricing and features you need can be a challenge. Below are the top ten SMTP servers for email marketing we’ve found to be the best. The Best SMTP Servers for Email Marketing 1. […]
The Best SMTP Servers
Owning your own SMTP server can help improve your deliverability, sender reputation, and security. However, picking the right one can be challenging. Below are some of the best SMTP servers we’ve tested. The Best SMTP Servers 1. MailerSend MailerSend is a standout SMTP server choice because of its developer-friendly design and robust email infrastructure. With […]
Buying an SMTP Server? Here’s Everything You Need To Know
Whether you’re launching an email outreach campaign or managing a corporate email system, having your own SMTP gives you great flexibility and control over your deliverability and security. Below, we’ll break down everything you need to know when looking to buy an SMTP server and touch on some of the best solutions available today. What […]
The Best Email Encryption Services
Emails are one of the secure ways to communicate professionally. Yet, is it one hundred percent secure? No, at least not, unless and until you set up an email encryption system. There are high chances that any unauthorized person couldn’t access your mail without encryption. After all, you don’t want the whole world to see […]
The Best Email Security Software
Email is a common channel for cybercriminals to hack into a system because it was originally designed to be open and accessible to everyone. Of course, those were the nascent stages of the Internet when such sophisticated attacks were unheard of. But as the Internet grew, it became a popular vector for attacks as hackers […]
Business Email Security Best Practices
Email is the most popular and preferred channel for business communication today. It is estimated that about 63% of business professionals prefer to use emails for their business communication, and each employee sends an average of 40 emails per day for business purposes. But there’s also a downside to this widespread usage, and that’s unauthorized […]
Landmark Washington Spam Case Victory
As you may or may not know, Washington State has a spam law that forbids deceptive email practices. For more info on this law see this area of the Attorney General of Washington’s website. Well, a landmark case regarding this law has just been decided. We put a copy of the release up on NetAdminTools […]
Test SMTP (email) via Telnet
One good trick to use when testing your email server is to use telnet. To send email, you can just telnet into the destination email server directly: u-1@srv-1 u-1 $ telnet yourmailserver.com 25 Trying 21.40.23.46… Connected to yourmailserver.com. Escape character is ‘^]’. 220 mx.yourmailserver.com ESMTP Sendmail 8.12.9/8.12.9; Thu, 12 Jun 2003 10:06:19 -0700 helo frommail.com […]
Osirusoft Is Blocking All Hosts
Due to DDoS attacks on Osirusoft, Osirusoft decided to reject all. So, if you are using Osirusoft to block spam, stop! Well, hats off to the valiant efforts of Osirusoft. Can’t really blame them for their reaction to this world of shit. The beautiful thing is that sysadmins and others in our community will find […]
Using Watch-maillog To Reduce Spam Chatter
It is truly amazing how many resources are taken up on a server by other rogue boxes searching for an open relay, or simply sending dictionary attempts at finding local users. Watch-maillog is a perl script that uses IPtables to block mail servers that abuse your server. Watch-maillog helps with this by blocking servers that […]
Setting Reply-to Address in Pine
We often need to mail brief messages from servers to send config files, or quick messages to other sysadmins. Pine works well for this, and the installation is mostly a single binary. We usually are logged in on some account that isn’t the email address we wish replies to come to. It turns out that […]
Adding an Alias to Postfix
If you simply want to make a mailbox receive mail for another address, just add the full address to /etc/postfix/virtual: [root@srv-2 postfix]# cat virtual usr-1@networking.com usr usr-1@networking2.com usr usr-2@maildomain.com anotherusr If we simply add this line to the bottom: usr-3@maildomain.com anotherusr Mail that was was delivered previously via usr-2@maildomain.com will be delivered in the same […]
UNIX and Outlook Express Interoperability
The MIME on Outlook Express seems to be broken. We have seen several instances where Outlook Express users cannot read Email sent by UNIX Email clients. The message is garbled with lots of question marks and other random characters. We have had this problem here at netadmintools.com, since we use Linux Office Suite 99 for […]
Wadding up Spambots With Spiderkiller
Spiderkiller is a C program that will generate unique pages with random email addresses that will confuse harvesting bots. Compile the app: srv-5:~ usr4$ gcc spiderkiller.c -o spiderkiller spiderkiller.c: In function ‘main’: spiderkiller.c:299: warning: incompatible implicit declaration of built-in function ‘strlen’ The options are simple: srv-5:~ usr4$ ./spiderkiller -help Usage: spiderkiller [-help] [-n ] [-k […]
IMAP Installation and Initial Configuration
First, we grab the source from the UW distribution link on here: [root@srv-33 src]# ls imap.tar.Z imap-utils.tar.Z [root@srv-33 src]# tar -xzf imap.tar.Z [root@srv-33 src]# ls imap-2001.BETA.SNAP-0105251616 imap.tar.Z imap-utils.tar.Z [root@srv-33 src]# mkdir imaputils (We will deal with imaputils in a different section.) [root@srv-33 src]# mv *util* imaputils mv: cannot move `imaputils’ to a subdirectory of itself, […]
Postfix RPM Upgrade for Red Hat Enterprise Linux 3
One of the servers we work on is running Red Hat Enterprise Linux 3 (RHEL 3). We needed some features in the later versions of Postfix, rather than the backported version for RHEL 3. There are some RPMs available here: http://postfix.wl0.org/ftp/official/2.2/RPMS-rhel3-i386 The latest version as of the date of this article is 2.2.5-3. If you […]
