Mark - adjusting this setting in mailman.cfg seemed to do the trick. No more errors and postfix is able to send mail out to our Amazon SES relays just fine now.
Thank you, On Mon, Mar 10, 2025 at 6:57 PM Mark Sapiro <m...@msapiro.net> wrote: > 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=< > > br...@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 <m...@msapiro.net> The highway is for gamblers, > San Francisco Bay Area, California better use your sense - B. Dylan > _______________________________________________ > Mailman-users mailing list -- mailman-users@mailman3.org > To unsubscribe send an email to mailman-users-le...@mailman3.org > https://lists.mailman3.org/mailman3/lists/mailman-users.mailman3.org/ > Archived at: > https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/message/LIZJJIBQXLMSLZ4K3MEZVJRZ4CR377IV/ > > This message sent to jbernal.web....@gmail.com > _______________________________________________ Mailman-users mailing list -- mailman-users@mailman3.org To unsubscribe send an email to mailman-users-le...@mailman3.org https://lists.mailman3.org/mailman3/lists/mailman-users.mailman3.org/ Archived at: https://lists.mailman3.org/archives/list/mailman-users@mailman3.org/message/7IYCZHZLCH2EKDXONVS6Q5QY5PBJPLVB/ This message sent to arch...@mail-archive.com
