I've been getting undeliverable emails returned for about a month now. Doesn't matter to who or how the email is worded ect. No reason this should be happening. Anybody with this issue? It's only when sending.
Everything updated everywhere as well. No updates available.
This is the error report minus my email addresses..
>: host gmail-smtp-in.l.google.com[74.125.138.27] said: 550-5.7.1 [64.98.42.126] Messages missing a valid messageId header are not 550 5.7.1 accepted. x5-20020a056902102500b0066c7dfd760esi19870525ybt.396 - gsmtp (in reply to end of DATA command
