March 11, 2025
1:56 a.m.
On 3/11/25 7:06 AM, Jose Bernal via Mailman-users wrote:
Here is the message. We've got several thousand log entries like this now:
*554 Transaction failed: Duplicate header 'DKIM-Signature'* Mar 10 08:31:10 mail1 postfix/smtp[217753]: 738B53F15E: to=< brian@brianmichaelslaw.com>, relay=xxx.org[44.225.xxx.xx]:587, delay=37, delays=2/35/0.16/0.13, dsn=5.0.0, status=bounced (host said: 554 Transaction failed: Duplicate header 'DKIM-Signature'. (in reply to end of DATA command))
This is Amazon SES being stupid, but you can avoid this issue by setting
remove_dkim_headers: yes
in the [mta] section of mailman.cfg.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan