If the instance satisfies these two problems, then the ethtool -i ethn command should really exhibit the module is in use about the network interface. POP and IMAP are protocols utilized to get incoming emails, whilst SMTP is really a protocol that can help you send out outgoing emails. https://postalsmtpsetup45565.ja-blog.com/26828639/the-greatest-guide-to-ispconfig-3-migration