31 Jul
2020
31 Jul
'20
8:48 a.m.
I use a very common ISP (Virgin Media) in the UK. I know that sometimes emails to me get
bounced because of DKIM or whatever (I know very little about these things). I know that
people in the know think that these spam protection systems are no good, I don't know
why because as I said I know little about all this, although it seems to me that the
*intent* behind those systems is good. However, it seems to me that, for whatever reason,
they are used by a lot of the major ISPs, so might you end up excluding a lot of people if
you unsubscribe them for using an ISP that uses these measures?
I really wouldn't want to change my ISP just for one mailing list, because I also get
TV and phone all through the same provider, so it would be quite disruptive. But I think
it would be good if you were able to tell people that you choose to unsubscribe. I have a
Hotmail account I could use instead if I really had to.
Regards
Rob
-----Original Message-----
From: owner-hecnet at Update.UU.SE <owner-hecnet at Update.UU.SE> On Behalf
Of Johnny Billquist
Sent: 30 July 2020 22:40
To: hecnet at Update.UU.SE
Subject: [HECnet] Mailing list...
Hi, all.
I have an issue with some mail servers/providers that some people use.
I'm open to some suggestions, but also want to point out something to people
who are subscribed.
Sometimes I start getting mails bouncing for some subscribers. I do try to check
why, and occasionally there have been something I could do about it, but many
times it's simply what I would call a broken mail server for which there isn't
much I can do. So occasionally I unsubscribe people for which I'm just getting
bounces all the time.
One such example is one server who claims that 130.238.19.25 don't have
reverse DNS. Which is clearly incorrect. It have had proper DNS setup for at
least 20 years. I have no idea how that mail server is set up, but I can't do much
about it.
Other times mails gets denied because of some blocking service who thinks the
hecnet mails are just spam, or the host (Update) is untrustworthy, or have a
bad reputation or what not. Usually not much I can do about those either. If
people (or companies) decide to make use of such services, and such services
give that kind of information, it essentially just means that you'll not be getting
the hecnet mails any more.
There is only so much I'm willing to do to try and sort such things out.
I do consider such services and solutions to be fundamentally broken to start
with, but I will of course not say that people can't use them if they want to. But
chances are that you'll get dropped from the HECnet mailing list sooner or
later, unless you are using some service/technology that actually do work (not
sure if any such exists).
An example I got today (actual mailbox names redacted):
<XXXXXX at xs4all.nl> (expanded from
<hecnet-list>): host
mx4.xs4all.nl[194.109.24.139] said: 550 5.7.1 Spam message rejected by
06ULCRRd021949 on mxdrop301.xs4all.net, reason=CH (in reply to end of
DATA
command)
reason=CH ?
What does that mean. The mail is rejected because it came from Switzerland?
(Yes, I do live in Switzerland, and yes, it was a mail I sent to the list, but really?
Is all mail from Switzerland suspect now?)
<XXXXXX at me.com> (expanded from
<hecnet-list>): host
mx01.mail.icloud.com[17.57.152.9] said: 554 5.7.1 [CS01] Message
rejected
due to local policy. Please visit
https://support.apple.com/en-us/HT204137
(in reply to end of DATA command)
>
<XXXXXX at me.com> (expanded from
<hecnet-list>): host
mx01.mail.icloud.com[17.57.152.9] said: 554 5.7.1 [CS01] Message
rejected
due to local policy. Please visit
https://support.apple.com/en-us/HT204137
(in reply to end of DATA command)
Rejected due to local policy?
Following the link don't really give an answer, but just various
recommendation.
Most of those recommendations are already done (and have been the whole
time) by the HECnet list. SPF and DKIM we don't use. I had that setup for a
while on a mail server of my own, and came to realize that it hurt more than it
helped, so I removed it again. I doubt this will be setup on Update any time
soon, but either way, it's not there now, and it's not even clear if that is the
reason for the rejects, or some other thing. There is also no way to even get in
touch with Apple in this case, to fix this. So there is a fair chance I'll have to
unsubscribe a few more addresses in the near future...
I am not really interested in moving the mailing list to some other host. Any
suggestions from anyone on this topic?
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: bqt at softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol