I have group of user behind single WAN using mine Postfix submission
service. Sometimes they cann't connect but I dont know why. I thought
its cause that Postfix has default connection maximum from single IP
source, is this true?
* What is error/fail message in logs which I could find to verif
On 8/21/19 2:21 PM, Wietse Venema wrote:
> UDP/53 is DNS. There will be a hit each time there is email for you
> from a Postfix mailing list, with one request that has type MX, and
> one or more requests that have type A or .
I get thousands a day from China and Brazil and all over. They aren
ghe:
> On 8/21/19 1:21 PM, Wietse Venema wrote:
>
> > If you can be more specific about "blackHats hitting in my DNS from
> > cloud9" (like, what kinds of traffic are you referring to?), then
> > maybe I can provide you with actionable information.
>
> They just send to UDP 53 and quit. What I wa
On 8/21/19 1:21 PM, Wietse Venema wrote:
> If you can be more specific about "blackHats hitting in my DNS from
> cloud9" (like, what kinds of traffic are you referring to?), then
> maybe I can provide you with actionable information.
They just send to UDP 53 and quit. What I want to do is deny th
On 8/21/19 1:20 PM, Ralph Seichter wrote:
> See http://www.postfix.org/DEBUG_README.html , especially "Reporting
> problems".
Thanks.
--
Glenn English
ghe:
> OT: I'm getting a lot of blackHats hitting in my DNS from cloud9. Which
> are the Postfix related cloud9 IPs to whitelist before blocking the net?
If you can be more specific about "blackHats hitting in my DNS from
cloud9" (like, what kinds of traffic are you referring to?), then
maybe I ca
* g...@slsware.net:
> Mindspring/earthkink isn't accepting email from at least 2 Postfix
> configs on Linux.
See http://www.postfix.org/DEBUG_README.html , especially "Reporting
problems".
-Ralph
Mindspring/earthkink isn't accepting email from at least 2 Postfix
configs on Linux. It's worked well in the past, but quit working a few
days ago.
The log says their server timed out waiting for data after responding to
HELO. Traceroute shows a routing loop at their network.
I tried from a frien
