Hi,
Probably mainly for Debian users.
libgnutls30 3.6.7-4(Debian Buster)
exim4-daemon-heavy 4.89-2+deb9u5 (Debian Stretch)
Run these together and it tries to use TLS1.3 when sending email. And
google seems to close the connection straight away.
log entry:
2019-08-28 10:01:37
Hi,
I think you really need to use your own recursive resolver to use
spamhaus. Like install unbound and use localhost as resolver.
like using 8.8.8.8 results in no answer. Maybe your ISP's resolvers
have the same problem. Does your provider transparently proxy port 53
traffic?
Hi,
Weird problem.
We have a system that sends order updates to our customers. Plain text
emails. Not changed for years. Same system, same customers.
We suddenly have a problem for some where customers receive the email,
but it looks blank. The problem has only occurred with people using
ot hotmail or Microsoft here)
--srs
*From:* mailop on behalf of Tim Bray via
mailop
*Sent:* Tuesday, November 26, 2019 3:40 PM
*To:* mailop@mailop.org
*Subject:* [mailop] Blank emails to office 365
Hi,
Weird problem.
We hav
On 03/10/2019 08:46, Neil Youngman via mailop wrote:
It is now October. The emails are still coming and there has been no
further communication from CSA.
I'd be tempted to complain to the information commissioner. You are
lucky because you actually know who is sending the stuff, and they
On 02/02/2020 18:48, Matthias Leisi via mailop wrote:
From one particular IPv6 range, each and every DNS query was sent from
a unique IPv6 /128, and every /128 seen was used exactly once.
Um, I do this. To guard against cache poisoning attacks. Each
nameserver has a /64 to use for
On 27/01/2020 12:57, Lennert Van Alboom via mailop wrote:
Alternatives?
https://www.migadu.com/
Tim
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On 26/08/2020 21:33, Scott Mutter via mailop wrote:
I just wanted to gauge what other mail server administrators were
doing in regards to this. The response is kind of what i expected,
but the shift in wanting TLS and encryption on every connection, kind
of made me question what the response
On 27/08/2020 10:30, G. Miliotis via mailop wrote:
Not everyone is a business with already-public information. I run my
own server and host some domains on that. What assurances do I have
that my personal information is protected by T-Mobile / DT after I
send it to them? Why should I be forced
On 30/09/2020 08:17, Patrick Ben Koetter via mailop wrote:
At the moment the SMTP server itself supports STARTTLS and DANE. We plan to
add MTA-STS when the feature becomes available.
Should it be using TLS for outbound connections? I'm not seeing that?
(no problem if that is something you
On 30/09/2020 09:59, Thomas Mechtersheimer via mailop wrote:
It does. Exim adds "s" to received_protocol for encrypted connections.
Check your exim log for the cipher that was used...
Oh, it is. My bad. I was just expecting to see the cipher in the header.
TLS1.3 - all good :)
Tim
On 30/09/2020 10:08, Peter N. M. Hansteen via mailop wrote:
Back in the day I suppose you could get a sort of working setup with
UDP-only DNS, but this has me wondering, is there a quasi-rational
historical reason for blocking 53/TCP? As in, was there at some point in
time a 'ping of
Hi,
So seems to be spam/ham day today. I've just done 6 unsubscribes. Orgs
I have never heard of, or maybe an organization I once bought something
from 10 years ago (or their sister company)
I think people are trying to kick start their businesses in the UK by
digging out all their old
On 02/06/2020 09:37, Benoit Panizzon via mailop wrote:
Still 'Spamrate' and 'IP Reputation' and 'Domain Reputation' (all other
items too) still show 'there is no data available yet'.
At work (provu.co.uk) we send hundreds of emails a day, but always no
data in postmaster tools. I just
On 02/06/2020 16:42, Ken O'Driscoll via mailop wrote:
Without seeing the actual message my guess is that the *aspf=s* is the
problem. This is telling receivers that you want to enforce strict SPF
alignment, which means the FQDNs used the SPF tests must match. So, if
your 5321.From is using a
On 07/08/2020 19:31, Brandon Long via mailop wrote:
Anyways, the point of my story is that it may not be a change to
Outlook at all, but a Windows networking change or maybe just more
network flakiness among your customers or even your own network (less
likely).
I wonder if the original
On 11/08/2020 20:41, Matt Harris via mailop wrote:
We'd been using sendgrid in production for some stuff, but we're
looking at changing that now because it seems like their lack of
concern regarding abuse on their platform will lead to more and more
deliverability issues as time
Hi,
Anybody else seeing increase phishing through sendgrid? They look
fairly convincing.
A few paypals, and a few amazons.
I thought sendgrid were ok? Has somebody leaked a big pile of
sendgrid usernames and passwords or something?
--
Tim Bray
Huddersfield, GB
t...@kooky.org
On 17/06/2020 16:01, Len Shneyder via mailop wrote:
Hi All,
Appreciate the discussion. As was mentioned in another forum we are
aware of the problem—the entire time is engaged in deploying a
comprehensive fix that will prevent a wave like this in the future.
Just to be perfectly clear, there
On 24/06/2020 23:03, Al Iverson via mailop wrote:
Yep, fill out this form:http://go.microsoft.com/fwlink/?LinkID=614866
Wait a few days for a reply.
First reply might just be a "we're routing your ticket" response.
Second reply might be useful, or it might be completely bonkers.
You might have
On 04/06/2020 20:08, Matthew Grove via mailop wrote:
Of course, there is always a remote possibility that some
misconfiguration on our side is causing us to reclassify your specific
bounce message. You can compare our /X-MC-User/ header to verify that
we are not suppressing the address at
On 02/06/2020 21:22, Michael Wise via mailop wrote:
It would need to be a standard... a SINGLE standard.
Like the FTC "Do Not Call" list.
I wasn't thinking about something central at all. I was just thinking
about it as something top 1 or 2 market leaders could do to be helpful.
(like
On 02/06/2020 21:52, Oreva Akpolo via mailop wrote:
Hey Tom,
I'm Oreva, a Deliverability Engineer at Mailchimp. There currently
isn't a system to force double opt-in on recipients per email address.
What we can recommend is to set up filters or folders, so that you're
only seeing mail from
On 06/01/2021 13:23, Dan Malm via mailop wrote:
Just thought I'd spare others some troubleshooting in case you run in to
this, and see if anyone else have any thoughts on it. :)
My thoughts are `time for mail operators to pull their fingers out and
upgrade`. Because we are really saying
Hi,
I'm wondering if it might be a good idea to strip all sender names from
emails coming into our corporate email system. To avoid a false name
being used by a scammer.
So rewrite a header like
`From: Bob Smith ` to `From: b...@example.org`
Because the domain part is checked by SPF and
On 08/12/2020 12:32, Mary via mailop wrote:
A solid idea, but you would have to avoid modifications to DKIM signed emails
that sign the From header field via the h= tag as specified by RFC6376 secton
5.4 and 5.4.1.
They aren't going to go any further once they will come in. So I don't
On 08/12/2020 09:22, Paul Smith via mailop wrote:
Forwarding is still useful nowadays, but 'willy nilly' forwarding
shouldn't be. Nowadays, there needs to be a way to limit forwarding to
the forwarding you actually want to happen. The risk of spoofed mail
can be catastrophic for a company, and
On 08/12/2020 21:35, Ángel via mailop wrote:
By the way, how did the "buy amazon and google vouchers" work? That is
a new one for me. I am used to CEO fraud wanting to transfer a big
amount from the company account, not having the employees buying (with
their own money?) amazon vouchers.
On 20/11/2020 08:01, Andrew C Aitchison via mailop wrote:
The developers would like to use a "standard" schema;
does anyone use or know of a JSON schema for mail servers logs ?
Tricky - a streaming file format is not going to be a valid JSON document?
Unless you do 1 JSON document per line,
On 04/05/2021 20:16, Al Iverson via mailop wrote:
But on a 1-10 scale of spam problems, I'd call this one about a 1.5. I
don't find it worthy of navel gazing.
I got the same message. It's from Hardenize. I thought the contents
were proper useful. I don't care that I registered my account
On 16/04/2021 13:44, micah via mailop wrote:
It seems to be a fun past-time for some people to mailbomb users (10k
emails in minutes), to blow up a person's mailbox so they are over
quota, or to make them miss an important email.
I'm curious what others have settled on for reasonable rate
On 21/04/2021 11:23, Neil Youngman via mailop wrote:
It doesn't behave exactly like a normal mail server, but it does retry
more than five times. Not all retries are from the same IP, but I have
observed that retries from the same IP don't get delivered.
Can you just deliver to a normal
On 16/12/2020 10:50, Thomas Walter via mailop wrote:
we switched over to rspamd quite a while ago and will not look back.
I switched on the back your suggestion. rspamd seems way better.
And switching on the dmarc module sends away the scammers.
--
Tim Bray
Huddersfield, GB
t...@kooky.org
Hi all,
I noticed that a google IPv6 address was recently listed in spamhaus XBL.
2607:f8b0:4864:20::82c at 2021-08-30 19:27:45 UTC
I just thought this a bit unusual and worth a mention. Probably the
first time I've seen spamhaus block a genuine sender (to me)
On 15/07/2021 12:29, Mark Milhollan via mailop wrote:
Spamhaus has been working fine for me and has been a wonderful
resource for many years, but I recently decided I had to disable using
them on my personal, low volume mail server because of a few recent
surprises (that's right, I don't look
Hi,
I've used different hostnames (and therefore different certificates) on
the same IP for years on one service.
And different IPs with different IPs on another service.
And same IP, same hostname (same certificate) on another.
Makes no difference. Do what suits you.
Tim
On 15/10/2021
On 25/11/2021 14:22, Mary via mailop wrote:
But that is not a real solution is it?
Maybe linode and spamhaus can come up with a better solution between them?
Why is it not a real solution?
It's a bigger problem than Linode and Spamhaus. (I refer to Linode
in my writings, but I don't
On 17/07/2021 21:13, Slavko via mailop wrote:
Please, i want ask others if are these (mostly) Brasil attempts know to
others too or am i "special" target?
I seem to get continuous SMTP stuff. Work is much worse than my
personal server. But we have 10's of domains and due to historical
On 12/07/2021 12:00, Jaroslaw Rafa via mailop wrote:
They required SMTP AUTH for all messages
received on port 25 with the sender from their domain and rejected the
messages if the session was not authenticated. A crazy idea, but they did
exactly this.
I do this. For a corporate email
On 19/07/2021 10:16, Thomas Walter via mailop wrote:
On 19.07.21 10:56, Tim Bray via mailop wrote:
I do this. For a corporate email system is makes a lot of sense. I
shouldn't be receiving email externally with a From: domain which is
local.
As long as your users don't have an external
On 16/07/2021 17:58, Al Iverson via mailop wrote:
If you want to guide this dummy on how to run a local resolver like
that, I'd appreciate the tips.:) I was trying to get out of the DNS
business but if I want to do any local DNSBL querying, I guess I have
to reconsider that.
On an
Hi,
Is anybody else having trouble relaying email out of office365.
I think they have broken their reverse DNS.
Our method to trust
*.outbound.protection.outlook.com
2022-02-10 09:51:46 H=(GBR01-LO2-obe.outbound.protection.outlook.com)
[2a01:111:f400:7e15::200]
When we receive from
On 03/06/2022 11:13, Carlota Iglesias Martinez via mailop wrote:
I have managed to find that “Herustics” refers that they are coming
from a financial institution and ‘SpoofedDomain’ means that they
contain hyperlinks that are not known to be associated with the
organization and may be
On 04/03/2024 21:40, Sebastian Nielsen via mailop wrote:
Im thinking to do same as I do when I filter emoji from subject lines,
but this will also filter out umlaits from people’s names so “André
Andersson” becomes “Andr Andersson” and “Recep Tayyip Erdoğan” would
become “Recep Tayyip
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