Support for /etc/mailname#27

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Commits on Mar 7, 2025

If session->localhost is NULL then first try to populate it using /etc/mailname (if available).
Neil
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Commits on Mar 12, 2025

When the environment variable LIBESMTP_EHLO_FQDN is set then it now indicates either that canonical hostnames be looked up and used in place of unqualified hostnames, or an explicit hostname to use.
Neil
committed