Hi! We're trying to send mail to fibertel.com.ar addresses and are encountering a very odd type of blacklisting:
Aug 6 16:37:21 list02 postfix/error[156603]: 4WdFQY6wVlz10KF: to=<[email protected]>, relay=none, delay=48891, delays=48885/6.3/0/0, dsn=4.7.1, status=deferred (delivery temporarily suspended: host mx1.fibertel.com.ar[181.30.137.5] refused to talk to me: 220-avasmx02-slo1.int.fibertel.com.ar ESMTP 521-5.7.1 Service unavailable; client [45.90.5.195] blocked using pblwl.spamhaus.org 521 5.7.1 Para obtener ayuda, pongase en contacto con su administrador. Proporcione la siguiente informacion en su informe de problemas: Hora: (Aug 06 11:37:21), Cliente: (45.90.5.195), Server: (avasmx02-slo1.int.fibertel.com.ar).) Problem: pblwl.spamhaus.org doesn't exist as far as I can see (as in "not mentioned on spamhaus.org") Also, 45.90.5.195 is not listed on spamhaus.org: https://check.spamhaus.org/results?query=45.90.5.195 So I wonder what they're doing there. -- Ralf Hildebrandt Charité - Universitätsmedizin Berlin Geschäftsbereich IT | Abteilung Netz | Netzwerk-Administration Invalidenstraße 120/121 | D-10115 Berlin Tel. +49 30 450 570 155 [email protected] https://www.charite.de _______________________________________________ mailop mailing list [email protected] https://list.mailop.org/listinfo/mailop
