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Adding cPanel DKIM Record to External DNS Issue: When adding a cPanel generated DKIM key to an external server, error messages such as:... Blind Copy BCC Outgoing eMail Using Exim Issue: Client requires outgoing email from a specific account to be blind copied to another... Blocking “ylmf-pc” on cPanel with Exim Issue: Reports of lockouts where the reported remote host is identified as “ylmf-pc”. This is a... Configure Smarthost eMail Relay in cPanel Issue: Server 1 (abc.domain.com – xxx.xxx.xxx.xxx), is powered by cPanel, running Exim. Server... Configure cPanel Exim 4 to Relay Outbound Email Using SendGrid Issue: Email reputation is quickly becoming a dominant facet effecting deliverability of email.... Convert Roundcube to Use SQLite in cPanel The following are the benefits of running Roundcube over SQLite (on a cPanel based server):... Fix Excessive SMTP Failures – dovecot_plain authenticator failed Issue: Excessive failed authentication attempts to abuse mail, resulting in excessive... Fix cPanel Domain Exceeded the Max Defers and Failures Per Hour Issue: Sending domain has exceeded number of failed or deferred messages and is no longer able to... Invalid Domain Key (DKIM) Fix Issue: After troubleshooting a cPanel server for email deliverability, it’s found that the DKIM... Mail Server Allow .com File Attachments Issue: Google sends DMARC reports using a .com file attachment. Exim prevents .com attachments,... Mail Server Block Specific TLDs Inbound Issue: Excessive inbound spam from someTLDs using. Example list here:... Reverse DNS does not match SMTP Banner cPanel based server using Exim. Issue: When using the “Test Email Server” tool at:... cPanel Create and Delete eMail via Command Line Issue: cPanel server, sysadmin needs to create or remove email accounts via the command line.... cPanel Fix Possible Mailbox Corruption Error Message Issue: A user is unable to access their email, instead they receive a message as the example...