The mail server for the achurch.org domain appears to be incorrectly listed in some DNS-based blacklists. The server operates on a static IP address (as noted by the "fx", short for "fixed", in the PTR record), does not act as an open relay, and has not been used to send spam, but some blacklist operators have in particular incorrectly treated the IP address as a "dialup" or "dynamic" IP address. To rectify this, please add the IP address 60.39.233.218 to your mail server's whitelist.
Please also be aware that I am blocking domains which use such DNSBLs or local blacklists that reject mail from achurch.org. If you encounter such a block, please inform me (from another domain, or using MAIL FROM:<>) when you have taken corrective action so that the block can be removed.
Thank you.