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Emails to [email protected] blocked

 

I'm not really sure where to send this, but I figured some people on
this list might have an idea.

I sent an email to curator@... a few months ago to get access
to some software on their site. I never heard back. I reached out again
just now and received a response that my email had been blocked as junk
mail. I actually don't need the software anymore - found it on the
terrific hp-series300.net, but I'm concerned that my emails are being
flagged. Has anyone experienced this?

There was nothing suspicious about my original email or the follow-up. I
also don't use a graphical email client, so there are no funny images or
attachments in the email; just plain text. This is the blocked response
I got back.

** Message blocked **

Your message to curator@... has been blocked. See technical details below for more information.

The response from the remote server was:
550 "JunkMail rejected - mail-pj1-f53.google.com [209.85.216.53]:42889 is in an RBL: "

Matt
 

On 5/27/22 20:03, Matt Huszagh wrote:
I'm not really sure where to send this, but I figured some people on
this list might have an idea.
I sent an email to curator@... a few months ago to get access
to some software on their site. I never heard back. I reached out again
just now and received a response that my email had been blocked as junk
mail. I actually don't need the software anymore - found it on the
terrific hp-series300.net, but I'm concerned that my emails are being
flagged. Has anyone experienced this?
There was nothing suspicious about my original email or the follow-up. I
also don't use a graphical email client, so there are no funny images or
attachments in the email; just plain text. This is the blocked response
I got back.
** Message blocked **
Your message to curator@... has been blocked. See technical details below for more information.
The response from the remote server was:
550 "JunkMail rejected - mail-pj1-f53.google.com [209.85.216.53]:42889 is in an RBL: "
David Collins is currently the curator of hpmuseum.net. He's on the VintHPCom mailing list; if you post there he'll see it.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA
 

On 5/27/22 18:03, Matt Huszagh wrote:
[209.85.216.53]:42889 is in an RBL
This means your IP is blacklisted. is there a URL for remedy in the message? You can ask to be unblacklisted.
It can be because your ISP allows too many bad customers sometimes.
 

Actually, that means the IP of your email server is blocklisted. If
you do a reverse lookup on that, it resolves to mail-pj1-f53.google.com.

You can look up IPs on line to see which, if any, blocklist it appears
in. A couple sites are mxtoolbox.com and www.debounder.com. This server
does appear in a two or three blocklists.

What you need to do is contact whomever manages your email system and have
them apply to be removed from the blocklist. This has to be from
an administrator of the domain, not a user, and any spam issues have to
be corrected.

Sometimes there may be some configuration issues at the mailer that
rejects the mail. On my system I was getting transient blocklist failures
rejecting perfectly valid senders and I had to disable that feature.

Paul

On Sat, May 28, 2022 at 07:52:43AM -0600, John Griessen wrote:

On 5/27/22 18:03, Matt Huszagh wrote:
[209.85.216.53]:42889 is in an RBL
This means your IP is blacklisted. is there a URL for remedy in the message? You can ask to be unblacklisted.
It can be because your ISP allows too many bad customers sometimes.







!DSPAM:62922936133621664620935!
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows
 

On Sat, May 28, 2022 at 02:18:47PM -0400, Paul Amaranth wrote:
Actually, that means the IP of your email server is blocklisted. If
you do a reverse lookup on that, it resolves to mail-pj1-f53.google.com.

You can look up IPs on line to see which, if any, blocklist it appears
in. A couple sites are mxtoolbox.com and www.debounder.com. This server
does appear in a two or three blocklists.
Oops, typo. That was www.debouncer.com

--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows
 

Based on recent painful experience, I've discovered a couple of things:

1. Some ISPs block based on listing in some questionable databases. In particular, the "UCEPROTECT" lists range from including just the sender IP, to the whole subnet of that IP, to the whole ASN (assigned network number) of that IP, which can block millions of addresses. Smart ISPs assign only some weight in their spam filters to databases like that. But it seems not all are smart, or they get accidentally misconfigured. Our ISP recently had a big fight with MSFT over this.

2. Big ISPs like Google and Microsoft have gotten more picky about the sending system having correct DMARC, DKIM, and SPF records in their DNS. If you have your own domain and set up your own DNS, you may not have those records set up. That didn't used to matter much, but we just solved several problems by getting our records fixed (we had some outdated info after our ISP made changes to their system).

John
----

On 5/28/22 14:18, Paul Amaranth wrote:
Actually, that means the IP of your email server is blocklisted. If
you do a reverse lookup on that, it resolves to mail-pj1-f53.google.com.
You can look up IPs on line to see which, if any, blocklist it appears
in. A couple sites are mxtoolbox.com and www.debounder.com. This server
does appear in a two or three blocklists.
What you need to do is contact whomever manages your email system and have
them apply to be removed from the blocklist. This has to be from
an administrator of the domain, not a user, and any spam issues have to
be corrected.
Sometimes there may be some configuration issues at the mailer that
rejects the mail. On my system I was getting transient blocklist failures
rejecting perfectly valid senders and I had to disable that feature.
Paul
On Sat, May 28, 2022 at 07:52:43AM -0600, John Griessen wrote:

On 5/27/22 18:03, Matt Huszagh wrote:
[209.85.216.53]:42889 is in an RBL
This means your IP is blacklisted. is there a URL for remedy in the message? You can ask to be unblacklisted.
It can be because your ISP allows too many bad customers sometimes.







!DSPAM:62922936133621664620935!

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