dnswl.org lookup error

Hellow! I am running postfix server under Ubuntu 18.04 LTS at Google Compute Engine. The hostname is <>, open port is 25 only. The server conf are bellow: So now question. After i added 'permit_dnswl_client list.dnswl.org', ve

Re: dnswl.org lookup error

Hi On Sun, May 08, 2022 at 07:42:00PM +0900, Byung-Hee HWANG wrote: > May 8 10:24:25 bionic190316003 postfix/smtpd[10918]: warning: > 17.188.51.209.list.dnswl.org: RBL lookup error: Host or domain name not > found. Name service error for name=17.188.51.209.list.dnswl.org type=A: Host > not fou

Re: dnswl.org lookup error

Dear Bastian, Bastian Blank writes: > Hi > > On Sun, May 08, 2022 at 07:42:00PM +0900, Byung-Hee HWANG wrote: >> May 8 10:24:25 bionic190316003 postfix/smtpd[10918]: warning: >> 17.188.51.209.list.dnswl.org: RBL lookup error: Host or domain name >> not found. Name service error for name=17.188.5

Re: Documentation Edit Request - smtpd_reject_unlisted_recipient

07.05.22, 21:18 +0200, Wietse Venema: James Feeney: At http://www.postfix.org/postconf.5.html : smtpd_reject_unlisted_recipient (default: yes) Request that the Postfix SMTP server rejects mail for unknown recipient addresses, even when no explicit reject_unlisted_recipient access restric

Re: dnswl.org lookup error

On 08/05/2022 11:59, Byung-Hee HWANG wrote: Dear Bastian, Bastian Blank writes: Hi On Sun, May 08, 2022 at 07:42:00PM +0900, Byung-Hee HWANG wrote: May 8 10:24:25 bionic190316003 postfix/smtpd[10918]: warning: 17.188.51.209.list.dnswl.org: RBL lookup error: Host or domain name not found. Na

Re: dnswl.org lookup error

Hi, I think your system is using systemd-resolved for DNS lookups; this hands off the real work of resolving to public resolvers, so RBLs will block your lookups. This is a normal setup for a systemd-based distro but is not appropriate for a mail server. We don't know if systemd-resolved uses

Multiple relays in transport maps for same domain?

Hi, Is it possible to specify multiple relay hosts in a transport map for load balancing/fault tolerance? example.com smtp:server1.com example.com smtp:server2.com I have a relay server set up as an MX for example.com. After mail is processed, I'd like to forward it on to either

Re: Multiple relays in transport maps for same domain?

Alex: > Hi, > > Is it possible to specify multiple relay hosts in a transport map for load > balancing/fault tolerance? > > example.com smtp:server1.com > example.com smtp:server2.com You can't have two entries with the same key. As of a few years you can specify example.com

Re: dnswl.org lookup error

Dear Bjoern, Bjoern Franke writes: > Hi, > >> I think your system is using systemd-resolved for DNS lookups; this >> hands off the real work of resolving to public resolvers, so RBLs will >> block your lookups. This is a normal setup for a systemd-based distro >> but is not appropriate for a mai

Re: dnswl.org lookup error

Dear Dominic, Dominic Raferd writes: > On 08/05/2022 11:59, Byung-Hee HWANG wrote: >> Dear Bastian, >> >> Bastian Blank writes: >> >>> Hi >>> >>> On Sun, May 08, 2022 at 07:42:00PM +0900, Byung-Hee HWANG wrote: May 8 10:24:25 bionic190316003 postfix/smtpd[10918]: warning: 17.188.51.20

Solved (Was: Re: dnswl.org lookup error)

Byung-Hee HWANG writes: > Hellow! > > I am running postfix server under Ubuntu 18.04 LTS at Google Compute > Engine. The hostname is <>, open port is 25 only. > > The server conf are bellow: > > > So now question. After i added