[Oberon] Duplicate headers in SMTP. Was RFC 5322 and ETH Oberon SMTP.

Paul Reed paulreed at paddedcell.com
Fri Jul 22 22:57:55 CEST 2022

Hi Peter,

> Here is another "Undelivered" reply from a gmail address...
>>     550-5.7.1 [] Our system has detected that this 
>> message is not
>>     RFC 550-5.7.1 5322 compliant: duplicate headers...

Definitely a more useful clue. Maybe you have autoCc on? I notice the 
code creates a new "CC:" field if so, rather than adding to any 
pre-existing one. This might be an issue with picky servers perhaps...

Just a thought.

More information about the Oberon mailing list