we recently changed our internet to comcast and would like to authenticate to their smtp server, I tried this
Outgoing SMTP Authentication - Zimbra :: Wiki but I am getting back host smtp.hmc1.comcast.net[76.96.53.14] said: 530
5.7.0 authentication required (in reply to MAIL FROM command) is there a setting I am missing? the settings I am using work in outlook
outgoing smtp smtp.hmc1.comcast.net
username - comcast email address
pw - password
this is added in my main.cf
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/opt/zimbra/conf/relay_password
smtp_cname_overrides_servername = no
and this returns my username and password from relay_password postmap -q mailrelay.example.com /opt/zimbra/conf/relay_password