Return codes for sending via SMTP access
Currently, you can obtain rejections for the following reasons.
Message setup:
101/102 - Sender address not validated on your account
100 - Invalid recipient address
Blacklist :
121 - This address cannot be contacted because it is in your blacklist
Bounce list :
131 - 132- This address cannot be contacted because it is in your bounce list
Red List :
111 to 114 : This address cannot be contacted with OxiMailing (the person has specifically requested to no longer receive e-mail communication from the platform)
In case of multiple sendings (several recipients) :
180 : All the addresses you try to contact are blocked (by the black, NPAI or red lists)