Am 23.09.20 um 19:36 schrieb Mike Tubby via Exim-users:
>
>> My only guess is to try disabling CHUNKING or PRDR advertisement, to see
>> if one of those is confusing them.
>
> Disable chunking, enable TLS v1.1 and are you using RSA or ECC
> certificates at your end?
>
>
IF it's one, it's PRDR . I
Am 23.09.2020 um 19:36 schrieb Mike Tubby via Exim-users:
On 23/09/2020 18:16, Jeremy Harris via Exim-users wrote:
On 23/09/2020 16:59, Bill Cole via Exim-users wrote:
1. You don't allow any TLS versions below 1.2. While that may seem to be
a safety measure, it actually can cause problems becau
Am 23.09.2020 um 19:16 schrieb Jeremy Harris via Exim-users:
My only guess is to try disabling CHUNKING or PRDR advertisement, to see
if one of those is confusing them.
Ok, tried that now, but didn’t help.
Regards,
Christian
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On 23/09/2020 18:49, Bill Cole via Exim-users wrote:
>> 22 212.227.15.19 → 94.16.119.13 TCP 66 41705 → 25 [FIN, ACK]
>> Seq=20 Ack=228 Win=64128 Len=0 TSval=3976249530 TSecr=307582370
>
> Why is your server setting the FIN flag on that packet?
That's GMX's FIN.
--
Cheers,
Jeremy
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## Li
Am 23.09.2020 um 17:59 schrieb Bill Cole via Exim-users:
Hi Bill,
No. Your server seems to support TLS v1.3 and v1.2 just fine.
Generally I’d be happy to read. But in this case it’s a bit disappointing.
Yes. There are 2 issues that *may* be causing trouble:
1. You don't allow any TLS versio
After Jeremy pointed out that they didn't even try STARTTLS, I looked
closer and noticed something odd...
On 22 Sep 2020, at 12:10, Christian Eyrich via Exim-users wrote:
Thing is that my mail server does support STARTTLS and also advertises
this which I verify in the Exim debug log and was a
On 23/09/2020 18:16, Jeremy Harris via Exim-users wrote:
On 23/09/2020 16:59, Bill Cole via Exim-users wrote:
1. You don't allow any TLS versions below 1.2. While that may seem to be
a safety measure, it actually can cause problems because a client that
does not support v1.2 or v1.3 can only
On 23/09/2020 16:59, Bill Cole via Exim-users wrote:
> 1. You don't allow any TLS versions below 1.2. While that may seem to be
> a safety measure, it actually can cause problems because a client that
> does not support v1.2 or v1.3 can only resort to sending in clear text.
>
> 2. Your server is s
On 22 Sep 2020, at 12:10, Christian Eyrich via Exim-users wrote:
Hi,
a few weeks ago the GMX mail servers stopped sending mails to my
server.
The GMX mailer daemon writes:
A message that you sent could not be delivered to one or more of
its recipients. This is a permanent error. The
On 23/09/2020 14:23, Andrew C Aitchison via Exim-users wrote:
> I note http://www.postfix.org/BDAT_README.html#downsides
IMHO there is some bogus advice there. If Postfix's
"reject_unauth_pipelining" is not working aright
then you can't trust it to work right, barring some
CHUNKING-specific bug t
On Tue, 22 Sep 2020, Christian Eyrich via Exim-users wrote:
Hi,
a few weeks ago the GMX mail servers stopped sending mails to my server.
The GMX mailer daemon writes:
A message that you sent could not be delivered to one or more of
its recipients. This is a permanent error. The following
On 22/09/2020 17:10, Christian Eyrich via Exim-users wrote:
> 20 212.227.15.19 → 94.16.119.13 SMTP 85 C: EHLO mout.gmx.net
> 21 94.16.119.13 → 212.227.15.19 SMTP 224 S: 250-mail.eyrich-net.org:
> Hello mout.gmx.net [212.227.15.19] | 250-SIZE 52428800 | 250-8BITMIME |
> 250-PIPELINING | 250-
Hi,
a few weeks ago the GMX mail servers stopped sending mails to my server.
The GMX mailer daemon writes:
A message that you sent could not be delivered to one or more of
its recipients. This is a permanent error. The following address(es)
failed:
christ...@eyrich-net.org:
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