On 9/23/20 6:29 AM, nikos wrote:
Hello list.
For some reason none of hotmail or outlook users don't receive any of our newsletter. Finally all of them auto unsubscribe.
The following is an error received form protection.outlook.com:
Remote Server returned '550 5.6.0 CAT.InvalidContent.Exception: ExchangeDataException, Decoding of header Subject failed+ADs- raw value: +AFs-Ps+AF0- +AD0-?iso8859-7?b?wer98fnz5yDF8OX05enh6t7yIOXq5N7r+-fPn8iDz9Oft?+AD0-; cannot handle content of message
It looks like the Subject: header of the message is in Greek and is RFC2047 encoded in the iso-8859-7 character set.
For some reason, Hotmail doesn't accept this.
That happened since September 10th this year. Before, all received without problem.
This is a Hotmail (Microsoft) issue. I don't know if communicating with them would help or not.
You could change Mailman's encoding for Greek from iso-8859-7 to utf-8, but this is an involved process. You have to recode Mailman's messages/el/LC_MESSAGES/mailman.po and templates/el/* and any custom templates from iso-8859-7 to utf-8, run msgfmt to recompile messages/el/LC_MESSAGES/mailman.mo and also recode any Greek strings in the list configurations. There is a script at <https://www.msapiro.net/scripts/recode_list> (mirrored at <http://fog.ccsf.edu/~msapiro/scripts/recode_list>) that can help with this last step.
I also don't know that changing the encoding from iso-8859-7 to utf-8 will help with this Hotmail issue or not, but it might be worth a try.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan