darcs repository web UI and hosting app. This is the main darcsden trunk, which also runs hub.darcs.net. (https://hub.darcs.net)
#182password reminder emails are sometimes rejected by gmail
A successful delivery:
Nov 15 15:55:47 hub postfix/smtp[24983]: 0F052E20AC: to=<USER@gmail.com>, relay=gmail-smtp-in.l.google.com[74.125.20.27]:25, delay=0.78, delays=0.04/0.01/0.15/0.58, dsn=2.0.0, status=sent (250 2.0.0 OK 1542297347 x9si26504538pgh.12 - gsmtp)A failed one (this one used an IPv6 address):
Nov 15 15:19:46 hub postfix/smtp[24651]: 2CA72D20AC: to=<USER@gmail.com>, relay=gmail-smtp-in.l.google.com[2607:f8b0:400e:c07::1a]:25, delay=0.44, delays=0.03/0.01/0.15/0.26, dsn=5.7.1, status=bounced (host gmail-smtp-in.l.google.com[2607:f8b0:400e:c07::1a] said: 550-5.7.1 [2600:3c01::f03c:91ff:fe62:77de] Our system has detected that this 550-5.7.1 message does\
not meet IPv6 sending guidelines regarding PTR records 550-5.7.1 and authentication. Please review 550-5.7.1 https://support.google.com/mail/?p=IPv6AuthError for more information 550 5.7.1 . i13si866088pgg.100 - gsmtp (in reply to end of DATA command))It seems we need an IPv6 PTR (reverse DNS) record, for which I need to get an A (AAAA?) record added for hub.darcs.net's IPv6 address 2600:3c01::f03c:91ff:fe62:77de.
This seems to be resolved:
$ bash -cx 'dig +short -tA hub.darcs.net; dig +short -x 173.255.254.113; dig +short -tAAAA hub.darcs.net; dig +short -x 2600:3c01::f03c:91ff:fe62:77de' + dig +short -tA hub.darcs.net 173.255.254.113 + dig +short -x 173.255.254.113 li280-113.members.linode.com. + dig +short -tAAAA hub.darcs.net 2600:3c01::f03c:91ff:fe62:77de + dig +short -x 2600:3c01::f03c:91ff:fe62:77deso emails should no longer be dropped for this reason.
I suppose they'll still be occasionally dropped for other reasons. There isn't a SPF record yet. And indeed https://www.mail-tester.com gives darcs hub's password reminder emails a low 4.3/10 score due to
[SPF] hub.darcs.net does not allow your server 173.255.254.113 to use darcshub@hub.darcs.net -1 Your message is not signed with DKIM -1 We didn't find a mail server (MX Record) behind your domain name hub.darcs.net. -3Leaving this open.
MPART_ALT_DIFF HTML and text parts are different -0.724Correcting my mispaste above just for the record.
$ bash -cx 'dig +short -tA hub.darcs.net; dig +short -x 173.255.254.113; dig +short -tAAAA hub.darcs.net; dig +short -x 2600:3c01::f03c:91ff:fe62:77de' + dig +short -tA hub.darcs.net 173.255.254.113 + dig +short -x 173.255.254.113 hub.darcs.net. + dig +short -tAAAA hub.darcs.net 2600:3c01::f03c:91ff:fe62:77de + dig +short -x 2600:3c01::f03c:91ff:fe62:77de hub.darcs.net.
