- Updated May 31, 2026 Amavisd process using 100% CPU If amavisd process in your server is taking 100% CPU then try the following Add this configuration in file /etc/mail/spamassassin/local.cf use_bayes 0 bayes_auto_learn 0 then restart amavisd systemctl restart amavisd
- Updated March 9, 2022 Postfix Blacklist/Whitelist Domain or IP [alert]We recommend that you rebuild the mail server with antispam before using this info if your mail server was rebuilt before 14.01.2022.[/alert] This option works only if you have rebuilt…
- Updated January 9, 2022 How to install DKIM 2048 bits long key You might need to install a custom DKIM key on your CWP DNS/bind server in case if you use your CWP server for nameservers and you use some external mail…
- Updated December 27, 2021 SpamAssassins Learning Learn SpamAssassins about new spam messages Before starting, by using your mail client move all spam messages to a custom folder named Junk and then you can scan that folder…
- Updated December 27, 2021 Test SpamAssassin and ClamAV By default when you rebuild the mail server in CWP with antispam then it comes with enabled ClamAV & SpamAssassin protection. You can enable it from CWP.admin by going to…
- Updated April 5, 2022 RoundCube (Internal Server Error) If you’re getting Server error (Internal Server Error) in Roundcube that is because you’ve some incompatible version of the Roundcube mail client is installed on your server which we didn’t…
- Updated November 28, 2021 Dkim double signature This issue can happen when using amavis. In case you have a double email signature you can edit your postfix config. [alert] However, mostly double dkim is NOT an issue,…
- Updated April 23, 2021 To reduce the amount of spam sent to Gmail Since many today have an issue with the gmail blocking them in case of the spam, here is a short info about it. If you see in your postfix log…
- Updated January 19, 2021 Postfix send email from dedicated ip address Create file called sdd_transport_maps.regexp: /@customer1-dom\.tld$/ customer1: /@customer2-dom\.tld$/ customer2: /@customer3-dom\.tld$/ customer3: ..... next ..... In master.cf create special transport called customer1, customer2, customer3….and so on customer1 unix - - n -…
- Updated November 5, 2020 Roundcube Update You can easily update your RoundCube to the latest version by using this command: sh /scripts/mail_roundcube_update The latest version will also bring you the new RoundCube skin elastic. If you…
- Updated September 22, 2020 catch-all emails In cwp you can easily set up a catch-all email for domain and send all to a single email account. From the mail forwarders in the user panel create a…
- Updated October 20, 2020 Policyd – Limit emails per hour Policyd is used to limit incoming and outgoing emails per hour. Video instructions Installation instructions Install it from cwp.admin by rebuilding the mail server with option policyd Left Menu->Email->MailServer Manager…
- Updated June 26, 2020 Recalculate mailbox quota If you had cleaned manually your mailbox via SSH or SFTP then you might need to update the mailbox quota Recalculate quota for single mailbox: doveadm quota recalc -u user@domain.com…
- Updated May 11, 2020 How to filter (spam) emails with the roundcube Easily manage email Filters from the RoundCube. Log in to your email account via RoundCube and go to Settings->Filters Video instructions
- Updated October 13, 2021 Move /var/vmail to another partition Due to the lack of the disk space on partitions like / or /var, it’s sometimes necessary to move the /var/vmail folder to a larger partition which has more free…
- Updated August 22, 2020 Set up MX records for G Suite Gmail To start using G Suite, you need to verify your domain and configure your domain’s MX records to direct mail flow to Google mail servers. Video Instructions 1. Verify domain…
- Updated April 25, 2022 How to Setup remote SMTP server as relay Sending an outgoing email through a 3rd party SMTP relay service is a quick and easy alternative to setting up a full-fledged local email server. Open /etc/postfix/main.cf and add the…
- Updated July 24, 2022 How to configure Spamassassin Hi, there is how to configure Spamassassin + CWP’s mail server. [alert]NOTE: You should enable Anti-SPAM from CWP.admin under MailServer Manager. * Please note that these changes can disable ClamAV…
- Updated September 22, 2020 Postfix pipe email to whmcs ticket Easy instructions for email pipe to whmcs ticket We recommend to skip these instructions and do it from the user panel Mail Forwarders -> Alias-Pipe – you need to have…
- Updated January 25, 2022 How to Debug Mail Server issues How to Debug Mail Server issues – Incoming Emails – Outgoing Emails – WebMail (Roundcube incoming/outgoing) Incoming emails =============== Log Files Postifx (smtp server): /var/log/maillog Log Files Dovecot (pop3/imap server):…