On 1/18/24 13:33, hg user via mailop wrote:
I also saw a spike in IP reported as malicious by spamhaus: IPs that have been sending emails for years: standard, business emails from personal accounts of people in airlines and hotels are now triggering spamhaus IP rbl... those IPs are NOT from big email providers.
Airline and hotel IPs probably should be characterized similarly to dynamic or residential IPs. It's unlikely that legitimate mail will originate there as SMTP. Users of these facilities typically use port 587 to relay mail through an authenticated smarthost.
-- Jay Hennigan - j...@west.net Network Engineering - CCIE #7880 503 897-8550 - WB6RDV _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
