** G. Miliotis <corfiot(a)elementality.org> [2015-11-12 22:51]:
On 12/11/2015 21:47, Roger Light wrote:
Hi Mike,
As it happens your email ended up in the gmail spam folder for me.
Google says the email didn't meet the authentication requirements for
zanker.org.
Cheers,
Roger
Beware of similar messages if sending to gmail over IPV6. They require all
the bells and whistles (DKIM, SPF) to even accept mail over IPV6. So always
remember to check if the mail server has it enabled.
** end quote [G. Miliotis]
This ^^. A while back, after using IPv6 on my mail server for a while, I found
that mail to Gmail and NTLWorld address (probably others) were being silently
dropped. It seems that Google had implemented/enforced a stricter policy on
IPv6 connections. As a result I spent a while making sure all the DNS entries
were good and creating a SPF record. Thankfully I created SPF records using the
TXT and proper SPF options in DNS because it seems as though the custom SPF
record has been depricated and a TXT one should be used now. That didn't help
sort out the new problem with my mail being filed as spam. This only seemed to
be happening on mail sent through my Mailman lists, and for some reason not all
- once in a while they would get through. I hope I've found the new issue now
as I've spotted that the reverse entry for the IPv6 address had a minor typo in
it and all is working fine now - fingers crossed! Getting mail to Google
addresses can be an education at times!
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