5/1/2023 0 Comments Ubuntu spamassassin![]() Please note that choosing another location will result in a higher cost. Coupon codes are based upon a US datacenter selection.Namecheap’s Supersonic CDN is only available for domain names that use Namecheap’s Shared Hosting nameservers.Check the Domain Privacy page to see the full list. Due to the registry restrictions, domain privacy is unavailable for a handful of TLDs.Cloud Storage is available with all Stellar plans with an EU datacenter and Stellar Business plans with a US datacenter.Please note only one domain name is allowed per hosting plan. Namecheap will provide a free domain name (first year only) with purchase of any annual or biennial Shared Hosting plan as long as the domain name is not considered "premium".This discount offer does not apply to renewals. Our advertised discount offer only applies to purchases of annual and biennial plans.The same scenario applies to those who have already opened a second Namecheap account. For example, if you previously created an account with Namecheap, subsequently canceled and signed up again, unfortunately you are ineligible for a refund. Only first-time Shared Hosting customers are eligible for our 30-day money-back guarantee.This space must be used in accordance with our Acceptable Use Policy (AUP), in particular Paragraph 10, Disk Usage Provision. Our Stellar Plus Plan offers unmetered disk space, intended only for your website.This is done by editing /etc/spamassassin/v320. You then need to configure SpamAssassin to use the precompiled rules. Install the required depencencies: sudo aptitude install re2c build-essentialĪnd run the sa-compile command: sudo sa-compile If you’re comfortable with that, setting up your system for precompiling SpamAssassin’s rules is easy. Eric mentions a negative to precompilation: it requires your mail server to have a C compiler. SpamAssassin can compile its rules into a C shared library that is used instead of interpreted perl code. While Perl’s regular expressions are fast, C regular expressions can be faster (and consume less memory). Precompiled RulesĮrich Schubert went into SpamAssassin 3.2’s ability to precompile rules a few months ago. ![]() Make sure to follow due process (securing user accounts, setting up firewall, etc) before enabling new network services. One important thing to note: the spamd/spamc combination sets up another service running on your system, possibly opening up a security hole waiting to be exploited. After verifying spam filtering still works after all these changes, you are done. Next, in your mail filtering scripts wherever you invoke the spamassassin command, invoke the spamc command instead. Start the spamd process: sudo /etc/init.d/spamassassin start Then, edit /etc/default/spamassassin to enable startup of the spamd process. Setting this up and relatively quick and easy. Install: sudo aptitude install spamc Instead, both perl and SpamAssassin’s rule sets are only loaded once. This alleviates all of the I/O caused by loading perl and all of SpamAssassin’s rules repeatedly. spamc is a lightweight C program made to replace the spamassassin command, taking a message and passing it to spamd for processing. spamd is a version of SpamAssassin intended to be run as long-running process that accepts connections from spamc. SpamAssassin 2.x introduced the spamc/ spamd combination to alleviate this issue. Starting SpamAssassin like this, with a decent amount of incoming e-mail, will increase I/O load and slows things down, fast. This process is expensive when you consider what this does: for each incoming e-mail, a perl interpreter starts and loads all of SpamAssassin’s perl code, including its thousands of rules. ![]() The spamc/spamd client/server combinationĪ normal SpamAssassin setup invokes the spamassassin command for each incoming e-mail that needs to be scanned. This depends completely on your setup, and more than likely there are plenty of other articles that describe the best way to setup what you want. This article does not discuss configuring your mail filtering system (i.e. These instructions can be adopted to other operating systems as well. Fortunately, there are several speed-ups and optimizations that can be applied to most SpamAssassin installations to speed up its rule processing, especially on Debian and Ubuntu GNU/Linux-based systems. ![]() Unfortunately, because there are so many different ways SpamAssassin can be used, SpamAssassin remains subject to many performance problems. SpamAssassin is one of the most-used spam filtering systems in use today. ![]()
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