Recently, I have been doing a deep-dive into my DMARC feedback. Not much
can be learned.
I tried to determine which of my outbound messages are represented by the
incoming reports. The match is not easy. From my configuration and the
outbound SMTP log, I know
Source IP
RFC5321.MailFrom Domai
On Fri 11/Nov/2022 03:11:39 +0100 Douglas Foster wrote:
Gmail has been blocking dual-from messages for years, so the
practice has effectively been deprecated by the one player who is able to
make these decisions unilaterally and make them stick.
They still do:
550-5.7.1 [62.94.243.226] Me
