messages missing a valid messageld header are not accepted
550-5.7.1
my emails from an IBM smtp server via optimum are all being rejected by gmail accounts.
the error message is above.
uses SSL port 465
i had added entries to my domain as follows
v=spf1 include:spf.protection.outlook.com include :spl.google.com include:secureserver.net ~all
LinkedIn
Twitter
