Filtering spam and viruses at the mail server with Amavisd-new
SCAN MANAGER
Sometimes the best time to stop bad mail is before it arrives. AmavisdNew is an Open Source interface for integrating spam and virus filtering with your mail server.
The majority of viruses are propagated via email. While it is still possible to receive viruses from floppy disks and CD-ROMs, or from Internet worms and rootkits that directly attack vulnerabilities in your operating system, you are much more likely to receive viruses via email – often by inadvertently opening seemingly innocent attachments. Of course it is important to have an up-to-date virus checker on your desktop, but defense in depth is the best approach, and this is why you should be protected from spam and viruses at your receiving SMTP server. Virus protection at the mail server prevents undesirable email from reaching your desktop, and it also keeps viruses out of your POP3 or IMAP account. Filtering from the mail server reduces the load on your desktop PC or laptop, reduces the amount of bandwidth you will use, and greatly reduces the risk of spam and viruses reaching your desktop. An additional advantage of providing this extra layer of protection is that, by using a virus checker on your desktop that is different from the content checker on your SMTP server, you reduce the risk of a virus passing undetected.
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
US / Canada
UK / Australia
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
Fedora Continues 32-Bit Support
In a move that should come as a relief to some portions of the Linux community, Fedora will continue supporting 32-bit architecture.
-
Linux Kernel 6.17 Drops bcachefs
After a clash over some late fixes and disagreements between bcachefs's lead developer and Linus Torvalds, bachefs is out.
-
ONLYOFFICE v9 Embraces AI
Like nearly all office suites on the market (except LibreOffice), ONLYOFFICE has decided to go the AI route.
-
Two Local Privilege Escalation Flaws Discovered in Linux
Qualys researchers have discovered two local privilege escalation vulnerabilities that allow hackers to gain root privileges on major Linux distributions.
-
New TUXEDO InfinityBook Pro Powered by AMD Ryzen AI 300
The TUXEDO InfinityBook Pro 14 Gen10 offers serious power that is ready for your business, development, or entertainment needs.
-
Danish Ministry of Digital Affairs Transitions to Linux
Another major organization has decided to kick Microsoft Windows and Office to the curb in favor of Linux.
-
Linux Mint 20 Reaches EOL
With Linux Mint 20 at its end of life, the time has arrived to upgrade to Linux Mint 22.
-
TuxCare Announces Support for AlmaLinux 9.2
Thanks to TuxCare, AlmaLinux 9.2 (and soon version 9.6) now enjoys years of ongoing patching and compliance.
-
Go-Based Botnet Attacking IoT Devices
Using an SSH credential brute-force attack, the Go-based PumaBot is exploiting IoT devices everywhere.
-
Plasma 6.5 Promises Better Memory Optimization
With the stable Plasma 6.4 on the horizon, KDE has a few new tricks up its sleeve for Plasma 6.5.