I have a number of hosted sites where email is forwarded to gmail.com using an aliases file entry. Recently some mail was bounced by Gmail. I know forwarding mail is increasingly risky as spam filters get more picky, but the instructions at https://support.google.com/mail/answer/175365?hl=en suggest that it is possible and should still work.
“We recommend that you do not change the envelope sender when forwarding email to Gmail.”
Does the default email setup in Sympl comply with this?
My impression is that Gmail’s advice is a bit optimistic if the sender has set SPF - doesn’t that mean my server is suspect as its IP address isn’t the right one? Then to fix that we’re into the Sender Rewriting scheme which has been discussed recently and looks tricky to implement.
Gmail offers a facility to do a POP3 fetch from a mailbox which might be an easier way to prevent messages from being rejected. Would that be a better option?