On 2024/05/13 09:38:40 +0200, Philipp wrote:
> Hi
>
> Sorry, this mail was overseen.
Yeah, sorry.
> [2022-08-30 13:23] "Tobias Fiebig"
> > I just started to see some DoS issue on my OpenSMTPd with table-mysql as
> > the backend. Specifically, my server ran into the user lookup process
> > ea
Hi
Sorry, this mail was overseen.
[2022-08-30 13:23] "Tobias Fiebig"
> I just started to see some DoS issue on my OpenSMTPd with table-mysql as the
> backend. Specifically, my server ran into the user lookup process eating a
> full core and torturing the mysql
> server after some funny brute-f
Heho,
I just started to see some DoS issue on my OpenSMTPd with table-mysql as the
backend. Specifically, my server ran into the user lookup process eating a full
core and torturing the mysql server after some funny brute-force attempts came
in. (writeup with graphs here:
https://doing-stupid-t
Sent from my iPhone
> On May 10, 2016, at 11:10 AM, Gilles Chehade wrote:
>
>> On Tue, May 10, 2016 at 10:56:10AM -0500, Edgar Pettijohn wrote:
>>
>>
>>> On 05/10/16 10:29, Gilles Chehade wrote:
On Tue, May 10, 2016 at 10:11:48AM -0500, Edgar Pettijohn wrote:
Sharing with the list
On Tue, May 10, 2016 at 10:56:10AM -0500, Edgar Pettijohn wrote:
>
>
> On 05/10/16 10:29, Gilles Chehade wrote:
> >On Tue, May 10, 2016 at 10:11:48AM -0500, Edgar Pettijohn wrote:
> >>Sharing with the list at Gilles request.
> >>
> >>To me it seems like at some point the daemon was treating my ou
On 05/10/16 10:29, Gilles Chehade wrote:
On Tue, May 10, 2016 at 10:11:48AM -0500, Edgar Pettijohn wrote:
Sharing with the list at Gilles request.
To me it seems like at some point the daemon was treating my outgoing mail
as incoming mail and refusing it because they weren't legal recipients.
On Tue, May 10, 2016 at 10:11:48AM -0500, Edgar Pettijohn wrote:
> Sharing with the list at Gilles request.
>
> To me it seems like at some point the daemon was treating my outgoing mail
> as incoming mail and refusing it because they weren't legal recipients.
>
> Enjoy,
>
Actually I'm unsure I
On Tue, May 10, 2016 at 12:52:54AM +0200, Gilles Chehade wrote:
> Doubtful that it is related.
> 3000 connections is less than 1 / sec during a single hour.
> You should share your system, OpenSMTPD version, config and logs
> so we help you understand what was the real issue.
> 3k connections fr
Doubtful that it is related.
3000 connections is less than 1 / sec during a single hour.
You should share your system, OpenSMTPD version, config and logs so we help you understand what was the real issue.
3k connections from a host, even flooding you, is not going to prevent your mails from reach
I found I was unable to send outgoing messages earlier. Looking through
the logs I had over 3000 connections from 112.236.76.92 in less than 24
hours. I blocked them with pf and now I can send outgoing again. Just
thought I'd share for those interested in this sort of thing.
Thanks,
Edgar
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