published by whitemice on Wed, 01/25/2023 - 11:03
Task: Converting an MBOX format export of a mailbox into a ZIP file containing each message as a file named after the message-id of the email message. Every e-mail client worth a pinch of salt can export messages, or a mailbox, to an MBOX file.
published by whitemice on Thu, 12/10/2020 - 14:58
I have a postfix SMTP relay buried deep in a network behind proxy servers, all the infrastructure [sadly] is IPv4 only. This works, yet one ends up with many log messages like:
connect to smtp.office365.com[2603:1036:304:2857::2]:587: Network is unreachable
The server attempts if IPv6 result from the DNS lookup first. So let's make postfix use IPv4 only.
postconf -e inet_protocols=ipv4
That's it! No more "unreachable" log messages.
published by whitemice on Sun, 05/06/2018 - 16:11
When testing applications one of the concerns is always that their actions don't effect the real-world. One aspect of that this is sending e-mail; the last thing you want is the application you are testing to send a paid-in-full customer a flurry of e-mails that he owes you a zillion dollars. A simple, and reliable, method to avoid this is to adjust the Postfix server on the host used for testing to bury all mail in a shared folder. This way:
