Further on this. Doing the forward and reverse lookups reveals this: ;; QUESTION SECTION: ;133.201.62.95.in-addr.arpa. IN PTR
;; ANSWER SECTION: 133.201.62.95.in-addr.arpa. 106382 IN PTR static-133-201-62-95.ipcom.comunitel.net. ;; AUTHORITY SECTION: 62.95.in-addr.arpa. 106382 IN NS ns.ripe.net. But no A record exists: ;; QUESTION SECTION: ;static-133-201-62-95.ipcom.comunitel.net. IN A ;; AUTHORITY SECTION: ipcom.comunitel.net. 10800 IN SOA ns1.comunitel.net. hostmaster.comunitel.net. 2015010200 86400 7200 2592000 172800 It seems to me the return value used by Postfix should be static-133-201-62-95.ipcom.comunitel.net. But instead Postfix appears to use: static-133-201-62-95.ipcom.comunitel.net Where the trailing root (dot) domain returned on the PRT RR is ignored. I believe that it is this omission that leads to the appending of the locally specified resolver search paths. Is this the intended behaviour? If so then why? -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail James B. Byrne mailto:byrn...@harte-lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3