Just upgraded snapshots from OpenBSD 7.2-current (GENERIC.MP) #1047 to OpenBSD 7.3-beta (GENERIC.MP) #1100. So, smtpd version is OpenSMTPD 7.0.0.
All of a sudden I'm getting MX resolution errors that were not occurring immediately prior to the upgrade, e.g. Mar 10 11:56:20 callistino smtpd[81842]: smtp-out: Failed to resolve MX for [relay:gmail.com,smtp]: Temporary failure in MX lookup Mar 10 11:56:20 callistino smtpd[81842]: 0000000000000000 mta delivery evpid=32d4773f133f952b from=<i...@datagenius.com> <i...@datagenius.com> to= <datagen...@gmail.com> <datagen...@gmail.com> rcpt=<-> source="-" relay=" gmail.com" delay=6m40s result="TempFail" stat="Temporary failure in MX lookup" There have been no smtpd configuration changes, smtpd.conf is same as just prior to the snapshot upgrade. Host name resolution using the dig and host all seem to work fine, so it doesn't seem to be a connectivity issue. Can anyone kindly give me some pointers on how to troubleshoot this issue? Many thanks in advance.