Last I checked, try bl...@postmaster.libero.it.
On Thu, Jan 24, 2019 at 5:45 PM Mark Dale wrote:
> Hi,
>
> Is there a contact for libero.it on this list? Or does anyone have
> a contact?
>
> We're suddenly seeing a lot of bounces with: "451 too many messages,
> slow down."
>
> Thanks,
> Mark
>
>
Hi,
Is there a contact for libero.it on this list? Or does anyone have
a contact?
We're suddenly seeing a lot of bounces with: "451 too many messages,
slow down."
Thanks,
Mark
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SPF and FCrDNS checks work best if mail servers have an IP that resolves to a
single hostname and that hostname resolve back to a single IP. The example
below was perfect to show that DNS round robin must be considered. It's best
just to remove the multiple A and PTR records from the equatio
mailop> Probably, this question is from misunderstanding on how DNS
mailop> round-robin works.
More fundamentally, it's because DNS round robin doesn't exist in the
protocol. If you ask for an FQDN and RRtype, you get all records, no
guarantee it will or won't be in the same order every time. And
Probably, this question is from misunderstanding on how DNS round-robin
works.
a:dispatch-us.ppe-hosted.com causes SPF to query A record for
dispatch-us.ppe-hosted.com. Response for this query contains _all_ A
records (not a random one, as you probably think). It means every IP
from the list belo
Hi Eric
> Is this a legit method? Looks like it's a typical round-robin so will fail
> more often then work..
As far as I remember, 'a' does just specify ip address without
specifying the protocol version.
So if a hostname is ipv4/ipv6 dual stack, 'a' includes all ipv4 and
ipv6 addresses that h
Hi Alex,
As far as my experience with BitNinja goes, on both occasions that they
contacted us, they were pretty cooperative in finding the spam source. But
I must admit our IP's never got blacklisted, only greylisted.
Regards,
Ewald
On Thu, 24 Jan 2019 at 16:38, Alexander Burch
wrote:
> Is the
I've got a customer receiving emails from ProofPoint and failing SPF.
Looks like they followed this page on ProofPoint's website:
https://support.proofpointessentials.com/index.php?/Knowledgebase/Article/Vi
ew/346/0/why-is-spf-check-failing-with-office-365
Basically, add "a:dispatch-us.ppe-ho
Is there any reason I should think Bitninja is reputable? They send us
complaint reports all the time and I often investigate them but they seem
totally erroneous and never lead to any real spam activity.
Then they send me a notice they've blacklisted our IP and that we should
consult them for ser
