2 Aug
2001
2 Aug
'01
6:22 p.m.
On Thu, 2 Aug 2001 kai@pac-rim.net wrote:
If you are receiving larger numbers of reports about failing mail transport from your customers these days, here is why.
Apparently, the nameservers for the blackholes.mail-abuse.org and dialups.mail-abuse.org zones are overloaded (I get <10% ICMP_echo's back, and virtually never any DNS answers), causing a more than 60-second connection-established -> 220 Hello banner answering delay on typical Unix-based Sendmail (and other SMTP) servers with default DNS resolver timeouts.
I noticed the same thing this afternoon but, only with trapdoor.merit.edu. All other mail was making it in fine. --- John Fraizer EnterZone, Inc