Google appears to now require that a domain have at least one of DKIM or SPF:
550-5.7.26 This mail is unauthenticated, which poses a security risk to the 550-5.7.26 sender and Gmail users, and has been blocked. The sender must 550-5.7.26 authenticate with at least one of SPF or DKIM. For this message, 550-5.7.26 DKIM checks did not pass and SPF check ... The sender should visit 550-5.7.26 https://support.google.com/mail/answer/81126#authentication for 550 5.7.26 instructions on setting up authentication.
We may not be able to rely on domain owners to configure their mta to set up DKIM/SPF. As such, add a config option to always rewrite the from address for a given list of domains.
Google appears to now require that a domain have at least one of DKIM or SPF:
We may not be able to rely on domain owners to configure their mta to set up DKIM/SPF. As such, add a config option to always rewrite the from address for a given list of domains.