Temporary MX Failures

[sarcanon]

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=[<[email protected]>](mailto:[email protected]) to=[<[email protected]>](mailto:[email protected]) 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 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.

[sarcanon]

Turns out this was an upstream issue in OpenBSD, or at least that's what I infer from the fact that I just upgraded snapshots again (to OpenBSD 7.3-beta (GENERIC.MP) #1109:) and the MX resolution errors have now gone away.

Feel free to close this issue.