Re: [mailop] Email System Testing Methodologies?

2022-06-13 Thread Kurt Jaeger via mailop
Hello,

> >One item to be aware of is that the outgoing servers (which return the
> >messages) do DANE validation, and thus will not deliver to any servers with
> >failed DANE.
> 
> pleaee, is no DANE considered as failed DANE? (Only to be sure...)

No -- I just tested and I have no DANE on my mailserver 8-}

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[mailop] nabble.com admin contact ?

2021-01-02 Thread Kurt Jaeger via mailop
Hi!

I'm from the postmaster@ team of FreeBSD.org and look for
some contacts from the nabble.com team.

We have approx. 75 subscribers on our mailman instance, of the form

lists+n-...@nn.nabble.com

where the mail to those addresses fails (in a way that our mailman
will not unsubscribe them). We would like to
know if we can unsubscribe those addresses.

Thanks for any contact to nabble.

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Re: [mailop] Any chance that Microsoft would tell it's customer that the 'junk' folder creates complaints?

2020-09-24 Thread Kurt Jaeger via mailop
Hi!

> Is there any chance such incidents could be avoided by Microsoft
> showing a pop up or similar, that a complaint to the sending ISP is
> being generated when moving an email to the 'junk' folder?

We receive those mails as well. Many times the mails from Microsoft
contain sensible personal information from the hotmail customer in
question, so I guess, Microsoft will be in GDPR trouble in one way
or another, sooner or later.

> Or that Microsoft would CC his own customer in that complaint sent?

It's a UI challenge, yes, but who if not a software company with deep
pockets should be able to tackle it ?

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Re: [mailop] [External] dcc down / dead?

2020-05-23 Thread Kurt Jaeger via mailop
Hi!

> Vernon has emailed me that everything is renewed. Can you confirm it
> looks good now?

Yes, confirmed.

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Re: [mailop] [External] dcc down / dead?

2020-05-23 Thread Kurt Jaeger via mailop
Hi!

> On 5/23/2020 7:23 AM, Stefan Bauer via mailop wrote:
[...]
> > seems like the main DCC servers are down (dcc1-6.dcc-servers.net),
> > also the website.

> Stefan, hi, I run a DCC mirror and not aware of anything.   And
> https://www.rhyolite.com/dcc/ is online for me.   Forwarded your email to
> Vernon for more troubleshooting.

The DNS zone dcc-servers.net expired:

Registrar Registration Expiration Date: 2020-05-22T17:54:35Z

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[mailop] contact to freenet.de mail admin here on the list ?

2020-05-04 Thread Kurt Jaeger via mailop
Hi!

For a mailserver I'm operating we see rejections when the connecting
IP is from IPv6, with the error message:

550-Inconsistent/Missing DNS PTR record (RFC 1912 2.1)

I've checked forward/reverse/SPF records for that domain and
set of IPs and everything checks out.

Is there some freenet.de mailadmin at hand so that we can find the
cause of that problem ?

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Re: [mailop] Certified Senders Alliance

2017-11-02 Thread Kurt Jaeger
Hi!

> What is the general opinion of the Certified Senders Alliance?

I had one case with them in 2009, which ended *very* unpleasent.

We had some spam case from one of their members, complaint by phone and
a few minutes later one of our internal addresses got subscribed via
some Tor relay to some spam lists.

They are a project of ECO, and we complained as member company of ECO.

Got nowhere.

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Re: [mailop] Message Store on NFS in a high available setup

2017-09-27 Thread Kurt Jaeger
Hi!

> is there anyone working in a larger/'more demanding' environment, using 
> NFS for his/her message store, where there is a business requirement of 
> High Availability? If so, what commercial or open source storage 
> solution is used? I have a similar requirement for a project and am 
> looking for suggestions/options for what storage to use.

Ask the dovecot folks, their open-source imap server
has a professional service team:

https://www.open-xchange.com/portfolio/dovecot-pro/

Open-xchange recently pooled dovecot, powerdns and open-xchange
in one company.

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Re: [mailop] SPF record

2017-05-21 Thread Kurt Jaeger
Hi!

Steve wrote:
> "~all" is the smart policy to use; ignore those who tell you to
> use "-all" or "?all".

Can you tell more about this ? Why is '-all' bad ?

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Re: [mailop] Is Yahoo! breaking the RFC 5321 for an Implicit MX?

2017-04-19 Thread Kurt Jaeger
Hi!

> have an explicit null MX record in the DNS, e.g.:
> 
> foo MX 0 .
> 
> See RFC 7075.

That's RFC 7505.

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Re: [mailop] 'abuse@' a hosting company - was this a valid response?

2017-04-13 Thread Kurt Jaeger
Hi!

> We received spam from a leased/hosted server (195.154.62.181) to an 
> email address which has never been used legitimately (ie it was a 
> scraped email address)
> 
> We reported it to abuse@ the hosting company with headers, message, etc.
> 
> The response we got back was essentially "We're sorry about that - our 
> customer has removed you from their mailing list - case closed"
> 
> Personally, I think that's a rubbish response.

Yes, that's rubbish.

> I'm extremely tempted to just block the entire ranges of this hosting 
> company based on the large amount of spam we've got from their hosted 
> services, and their useless response to the abuse@ email from us. The 
> problem is they're apparently a big ISP in France so while it's very 
> tempting, there's also the risk of collateral damage.

Well, brexit's looming anyway, so what stops you 8-) ?

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Re: [mailop] Mails to microsoft

2017-02-15 Thread Kurt Jaeger
Hi!

> There's what, 3 major providers? Hotmail, Gmail, Yahoo.
> 
> That's not a lot to sign up for.

baidu, web.de, gmx.de, t-online.de, the french players,
.

There's a lot out there...

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Re: [mailop] SORBS help

2017-01-10 Thread Kurt Jaeger
Hi!

To jump into the NetManager debate:

> If a company/ISP is registered with us for NetManager, and have chosen 
> to receive reports, they get emails upon listing and by default they 
> will have access to additional (but heavily munged) information that any 
> good sysadmin should be able to use to cross-reference in their logs and 
> locate the problem.

Now, we (AS12502) have applied for NetManager

http://support.sorbs.net/SelfService/Display.html?id=1172291

and from how I understand the replies, we did not get it. What can
we do to get it ?

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Re: [mailop] domain research tools?

2016-07-28 Thread Kurt Jaeger
Hi!

> Do you do any domain research in the course of your work? If so, what tools
> do you use for research [...]

http://www.domaintools.com/

has some services, for some EUR/$.

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[mailop] Delivery to A record if MX exists ?

2015-06-17 Thread Kurt Jaeger
Hello,

I think I remember a rule that says that delivery to a domain's
A record SHOULD NOT happen, if an MX exists.

Does that kind of rule really exists ? Or do I mis-remember ?

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Re: [mailop] Delivery to A record if MX exists ?

2015-06-17 Thread Kurt Jaeger
Hello,

 I think I remember a rule that says that delivery to a domain's
 A record SHOULD NOT happen, if an MX exists.
 
 Does that kind of rule really exists ? Or do I mis-remember ?

https://tools.ietf.org/html/rfc5321#section-5.1

5.1. Locating the Target Host

can be read that MX records have preference, but it explizitly avoids
mentioning A or  records if no MX is found. The sentence:

[...]
   If an empty list of MXs is returned,
   the address is treated as if it was associated with an implicit MX
   RR, with a preference of 0, pointing to that host.
[...]

implies a A/ DNS query, but does not explicitly state so.

I had a case where lb1-smtp-cloud3.xs4all.net delivered to an A record
where an MX existed.

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