Java 2 Ada

Mail and SMTP

Version 7 by Stephane Carrez

SMTP

RSPAMD

Problems & Solutions

SPF issues

  • EHLO miss-match between announced name, IP and reverse
  • missing TXT SPF record for the announced EHLO name

Example: if MX is smtp.vacs.fr

  • reverse DNS of server IP must be smtp.vacs.fr
  • there must be a TXT record 'smtp.vacs.fr' with v=spf1 a mx -all

verify with https://www.mail-tester.com

See SPF Common Mistakes