On Thu, Oct 27, 2022, Peter Beckman via mailop wrote: > Deferred: 451 4.7.500 Server busy. Please try again later from > [2a01:111:e400:7e0d::51]. (AS750)
Doesn't the MTA (which one do you use?) also try IPv4 or were there no A records at all? Do you still have the results for the MX and A/AAAA lookups when the problem happened? TIA. -- Please don't Cc: me, use only the list for replies. _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
