I forward mail to a gmail user, but there are a lot of bounces from gmail. I don't honestly care about the ones that google says are spam, but recently I'm also getting DMARC failures on Facebook mails.
Again, not critical, but a bit annoying. The only thing that I can think to do is disable the forwarding and tell the user to grab mail via POP3, but that means enabling POP3 which I'd rather not do. Gmail does not, IFAIK, allow you to combine your mail with another IMAP account. Any other ideas? -- Apple broke AppleScripting signatures in Mail.app, so no random signatures.