https://gitlab.synchro.net/main/sbbs/-/issues/303#note_2132
Looking at the code, I saw no explanation for the issue report (we always use the MX records if their are any).
And I could not reproduce the issue either:
Nov 7 11:34:41 cvs sbbs: mail 0000 SEND getting MX records for sysadmininc.com from 71.95.196.36
Nov 7 11:34:41 cvs sbbs: mail 0207 SEND resolving SMTP hostname: www.sysadmininc.com
Nov 7 11:34:41 cvs sbbs: mail 0207 SEND connecting to port 25 on www.sysadmininc.com [192.138.210.162]
Nov 7 11:34:41 cvs sbbs: mail 0207 SEND connected to www.sysadmininc.com
Nov 7 11:34:42 cvs sbbs: mail 0207 SEND Starting TLS session
Nov 7 11:34:42 cvs sbbs: mail 0207 SEND TLS Session started successfully
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