On 2021-07-19 19:27, Ken Johnson via mailop wrote:
An email I tried to send there returned with:
: host
al-ip4-mx-vip2.prodigy.net[144.160.235.144]
said: 550 5.7.1 Connections not accepted from servers without a
valid
sender domain.alph752 Fix reverse DNS for 173.228.157.53 (in
An email I tried to send there returned with:
: host al-ip4-mx-vip2.prodigy.net[144.160.235.144]
said: 550 5.7.1 Connections not accepted from servers without a valid
sender domain.alph752 Fix reverse DNS for 173.228.157.53 (in reply to
MAIL
FROM command)
For me, a reverse lookup on