As running a mail server brings numerous challenges, you need to analyze every detail with care to reach the right decision for you. The first factor you should bear in mind is the MTA (mail transfer agent): will it be relay-only or full-fledged? Relay-only (otherwise known as send-only) MTAs are capable of forwarding emails to another server, usually your ISP (Internet service provider’s) SMTP server. Some common relay-only MTAs you might recognize are msmtp, sSMTP, and nullmailer. This form of MTA is a solid option if you intend to send emails to your address (e.g. Gmail, Outlook). But consider these…
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