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A comment on Mail in a Box. Parent comment

Re:Mail in a Box by stas2k on Monday November 25, 2019 @02:15PM (#21631655)
You do not need 100% uptime to receive mail. Because email is store and forward, other server will retry for a reasonable time.

The most complex part is setting up all the DKIM and friends to make your outgoing mail authenticated.

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Re:Mail in a Box by GordonS on Monday November 25, 2019 @03:39PM (#21632538)
Was going to say much the same - other mail servers will retry failed sends for several days.

Setting up the basics is relatively straightforward, but I found it tricky to setup TLS correctly for SMTP and IMAP, and DKIM and SPF were horrible to configure and get working right!

I've been running my own mail server for 15 years or so - I really wish Mail In a Box had existed back then!

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Re:Mail in a Box by pseudalopex on Tuesday November 26, 2019 @12:01AM (#21635746)
Bulk senders give up in hours.[1][2] Some will even unsubscribe you.[3]

[1] https://postmarkapp.com/migration-guides/mailgun#processing-...

[2] https://forums.aws.amazon.com/thread.jspa?threadID=145330

[3] https://mailchimp.com/help/soft-vs-hard-bounces/

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