Source: postfix Version: postinst fails if /e/resolv.conf search domain starts with a "." Severity: normal X-Debbugs-Cc: par...@debian.org
Dear Postfix maintainers, When the /etc/resolv.conf search domain considered by postfix.postinst to configure postfix as an "Internet site" (the default debconf option), e.g.: search .example.com the installation fails with: Running newaliases newaliases: warning: valid_hostname: misplaced delimiter: debian-sid..example.com newaliases: fatal: file /etc/postfix/main.cf: parameter myhostname: bad parameter value: debian-sid..example.com dpkg: error processing package postfix (--configure): installed postfix package post-installation script subprocess returned error exit status 75 Processing triggers for man-db (2.9.4-2) ... Errors were encountered while processing: postfix E: Sub-process /usr/bin/dpkg returned an error code (1) Note the double dot in "debian-sid..example.com". Having domain start with a dot is not explicitly mentioned by resolv.conf(5), but the syntax is accepted by the glibc resolver, see: https://sourceware.org/git/?p=glibc.git;a=blob;f=resolv/res_query.c;h=ebbe5a6a4ed86abe3fccd4a134bfcf6f613c9bbb;hb=HEAD#l385 (thanks sergiodj@d.o for digging this up). The postfix.postinst file should tolerate those domains and strip off leading dots, as the glibc resolver does: https://sourceware.org/git/?p=glibc.git;a=blob;f=resolv/res_query.c;h=ebbe5a6a4ed86abe3fccd4a134bfcf6f613c9bbb;hb=HEAD#l411 The above was verified on an up-to-date Sid system with postfix 3.5.6-1+b1. Paride
