On 6/2/2012 11:44 AM, Sahil Tandon wrote: > Jun 2 10:04:30 mx1 postfix/dnsblog[58868]: warning: dnsblog_query: > lookup error for DNS query 23.124.167.115.b.barracudacentral.org: Host > or domain name not found. Name service error for > name=23.124.167.115.b.barracudacentral.org type=A: Host not found, try > again
> I know this is not an issue with Postfix (which dutifully reports the > TRY_AGAIN it receives from the system library), but I wonder if anyone > else is seeing this from barracuda? ~$ grep b.barracudacentral.org /var/log/mail.warn May 30 01:35:14 greer postfix/smtpd[343]: warning: 62.214.85.209.b.barracudacentral.org: RBL lookup error: Host or domain name not found. Name service error for name=62.214.85.209.b.barracudacentral.org type=A: Host not found, try again May 31 08:05:14 greer postfix/smtpd[30807]: warning: 45.162.165.188.b.barracudacentral.org: RBL lookup error: Host or domain name not found. Name service error for name=45.162.165.188.b.barracudacentral.org type=A: Host not found, try again May 31 12:32:49 greer postfix/smtpd[26129]: warning: 107.3.19.23.b.barracudacentral.org: RBL lookup error: Host or domain name not found. Name service error for name=107.3.19.23.b.barracudacentral.org type=A: Host not found, try again May 31 14:04:48 greer postfix/smtpd[3633]: warning: 54.11.138.188.b.barracudacentral.org: RBL lookup error: Host or domain name not found. Name service error for name=54.11.138.188.b.barracudacentral.org type=A: Host not found, try again This seems to be par for the course with BRBL. I first configured it when it was all a buzz some years ago, and every query resulted in these errors, so I ditched it. I enabled it again some year(s) later, and for the most part queries are answered. My MX runs only 500-1000 connects per day, and a few failures a day isn't a show stopper. It still stops a decent amount of spam. I'd guess they have some sort of (perennial) load balancing issues with their servers, or simply need to add more (geographically dispersed) servers. The problem isn't on your end Sahil. -- Stan
