Email to Tiscali are being rejected

[#1]

We repeatedly see emails to Tiscali and to TalkTalk destinations rejected with the same errors.

Trying twice this morning to one destination, (my father in law) we have two copies of :


Reporting-MTA: dns; avasout-ptp-004 [84.93.230.250]
Received-From-MTA: dns; hp-laptop [86.30.96.254]
Arrival-Date: Mon, 29 Dec 2025 08:50:45 +0000


Final-recipient: rfc822; forename.surname@tiscali.co.uk
Diagnostic-Code: smtp; 550 5.7.1 Connection refused - [84.93.230.250] blocked by Validity - https://senderscore.org/blocklist-lookup/ - OXSEU001_102 - https://postmaster-oxseu.vadesecure.com/inbound_error_codes/#_102

Last-attempt-Date: Mon, 29 Dec 2025 08:50:46 +0000

[#2]

Well that's a bit of a scam, senderscore.org blocklist lookup asking for personal information just to lookup an IP address. I did not go any further.

In regards to @PhilipHeyes I hope all your checking you've been doing hasn't gotten your IP on a blocklist somewhere. Might be an idea to check on a website that doesn't ask personal info just to see the rating. I know there's one that checks multiple lists but I can't remember it at the moment (I'll probably remember some time later).

[#3]

My checking is very simple I read the delivery failure information returned to MS Outlook.

We can see Plusnet's outbound email server: avasout-ptp-004.plus.net [84.93.230.250] was the rejected IP

The rejection reads : Connection refused - [84.93.230.250] blocked

Over recent months we have also seen the following Plusnet outbound email servers rejected
with an identical delivery failure message :

avasout-peh-001 [212.159.14.17] blocked by Talk Talk
avasout-peh-002 [212.159.14.18] blocked by Talk Talk
avasout-peh-003 [212.159.14.19] blocked by Talk Talk
avasout-ptp-003 [84.93.230.244] blocked by Talk Talk

avasout-ptp-003 [84.93.230.244]    blocked by Tiscali