Talking about email, .. a bit off-topic, but fyi. Maybe 9fans should consider to move the list to a different email provider, as topicbox does some things really bad, and forces people to use whitelisting for not only .topicbox.com but also .messagingengine.com, the address used by outgoing email.
'Thing is that topicbox uses return-paths like Jan 14 15:16:16 postfix/smtp[892]: 4013616065: to=<bounce.mmf69fb7a2ec786bdd37fc8981.rf5167a6a-eb83-11e9-92f5-7ab8f5b1d...@9fans.bounce.topicbox.com>, relay=mx1.topicbox.com[103.168.172.233]:25, delay=1.6, delays=0.02/0.17/1.3/0.14, dsn=2.1.5, status=deliverable (250 2.1.5 Ok) .. Jan 14 15:16:16 postfix/smtp[893]: 8D64D16067: to=<bounce.mm1d0608a97b91ed0ef138d2f7.rf5167a6a-eb83-11e9-92f5-7ab8f5b1d...@9fans.bounce.topicbox.com>, relay=mx1.topicbox.com[103.168.172.232]:25, delay=1.6, delays=0.01/0.23/1.2/0.19, dsn=2.1.5, status=deliverable (250 2.1.5 Ok) ... Jan 14 15:16:16 postfix/smtp[891]: 586AF16066: to=<bounce.mm0295fcc211a103059818efab.rf5167a6a-eb83-11e9-92f5-7ab8f5b1d...@9fans.bounce.topicbox.com>, relay=mx1.topicbox.com[103.168.172.233]:25, delay=1.7, delays=0.01/0.1/1.4/0.13, dsn=2.1.5, status=deliverable (250 2.1.5 Ok) ie, each and every email address is distinct, so that greylisters and sender verifiers have to greylist / verify each email sent to these lists by themselves! For return-path differentiation VERP[1] has been invented long ago, [1] https://en.wikipedia.org/wiki/Variable_envelope_return_path I usually do not really look at logs except for kernel / message, but rotated logs get sent via email, so i usually see "their fingerprint" (first and last few lines), and so i stumbled upon this by accident, given the current turmoil on this list. While looking into this i did some dig(1)ging, and though my DNS is a bit rusty, i did "dig topicbox.com" and got "103.168.172.5" for another 178 seconds, but then "dig -x 103.168.172.5" got NXDOMAIN by messagingengine.com, which is what one gets when asking for MX of topicbox.com. This seems pretty much no good. (Funnily topicbox seems to use postfix with many milters, .. i posted a similar message to postfix in "reject_unverified_sender: parallelism seems sub-optimal" on the 17th, maybe someone there has seen it by then .. or now here). So what other service? I do not know, maybe the GNU people would host it at nongnu, it is now GPL is it? lynx browser, tinyc, they are all there. The lua language decided to go googlegroups when their decade-long hoster vanished. A nice weekend i wish. --steffen | |Der Kragenbaer, The moon bear, |der holt sich munter he cheerfully and one by one |einen nach dem anderen runter wa.ks himself off |(By Robert Gernhardt) | |In Fall and Winter, feel "The Dropbear Bard"s pint(er). | |The banded bear |without a care, |Banged on himself for e'er and e'er | |Farewell, dear collar bear
