> We are mailing from our own CRM system but using Ionos (1and1.com) as our > mail service.
You're setting yourselves up to fail by mailing out of a server shared by thousands of other customers. The error messages you quote testify to that. Don't do it. -- Atro Tossavainen, Chairman of the Board Infinite Mho Oy, Helsinki, Finland tel. +358-44-5000 600, http://www.infinitemho.fi/ _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
