Wietse Venema: > This means that GLIBC (or whatever your equivalent is) has problems > not POSTFIX.
Nikolaos Milas: > Thank you Wietse and Victor for the diagnosis. > > As in RHEL / Rocky 8 we are at glibc v2.28 and it's really difficult to > switch to a new server (e.g. RHEL / Rocky 9 with glibc 2.33) any time > soon, what would be our options? > > Is there a way to instruct postfix to use a different DNS resolution > method? No. For remote SMTP client name/address checks, the Postfix SMTP server relies on the getnameinfo() and getaddrinfo() system library functions. It is possible to override these system library functions by providing your own alternatives with LD_PRELOAD. A picture is worth a thousand words, but I can't seem to find the original, so here goes: https://smorgasborg.artlung.com/dilbert-unix/ Wietse _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
