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um.lubin.pl

.pl crawl

First seen 2026-05-31 · Last seen 2026-06-02 · pending crawled 2026-06-02 3 attempts

PL · 89.191.148.30 · AS12618 Politechnika Bydgoska im. Jana i Jedrzeja Sniadeckich

Reputation 69/100 wrong cert dmarc monitor-only

ssl error: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: Hostname mismatch, certificate is not valid for 'um.lubin.pl'. (_ssl.c:1000)

DNS records live

NS
  • ns1.provider.pl
  • ns136.provider.pl
  • ns4.provider.pl
MX
  • 0 mail.um.lubin.pl
  • 10 poczta.um.lubin.pl
  • 15 ok.um.lubin.pl

Email authentication partial

SPF
v=spf1 mx ip4:156.17.196.2 ip4:156.17.196.3 a:poczta.um.lubin.pl a:rm.lubin.pl ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:dmarc-reports@um.lubin.pl
policy: none (monitoring only)
DKIM
  • mail: v=DKIM1;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAy4x0d2hrB1U5HPBfj/cEEgsKtG9mOuO86apmDacFrGAYctO2PF/WzZIpliFxMkaG1sCB28mgJnKIqGQjcgsqHw…
selectors probed

Certificate (current) wrong cert

R13
from 2026-04-07 to 2026-07-06
Expires in 33 days

Full certificate history on crt.sh ↗

Linked from (5)