Use an on-premises email server (Trade Server or another SMTP server) to relay mail When your unit is not able to satisfy the earlier needs for connecting to Microsoft 365 or Office 365. pkg install gcc gmake perl5 wget bison flex cyrus-sasl cmake python autoconf libtool libarchive iconv bind911 mailx https://whmcs-migration58841.livebloggs.com/32210805/a-secret-weapon-for-postal-smtp-setup