Another potential solution is to migrate it to SaaS like M365 or GSuite. On one site it has the classic and well-known downsides of 'the cloud', but on the other hand, if you have a small/medium enterprise, effectively outsourcing managing an email server and associated features for the price for which they offer it is a quite acceptable cost as opposed to the cost of employee-hours to maintain, secure and upgrade an on-premise solution.
But to close with the same remark as PoC: that would be getting a bit too much off-topic I think.
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Patrik Schindler
Sent: Tuesday, 9 November 2021 10:57
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Domino on the IBM i
Am 09.11.2021 um 09:32 schrieb Åke Olsson <konsult@xxxxxxxxxxxxxxx>:
I have a client that has been using Domino for some years as their mail server (incoming and outgoing) for some years.
They have now discovered that their old Domino version is too old for some SSL features and that they need to upgrade.
For some reason I feel that this may not be the right path. They only use Domino as an email server and domino is filled with an enormous amount of other stuff that they definitely do not need.
While you are correct with your "oversized" claim, apparently the customer is happy to use only a fraction of the possibilities?
What other mail servers can be installed on the IBM i? Any open source versions out there?
IBM i includes an SMTP and Pop3-Server. Unfortunately, no IMAP Server, which would make that a complete mail server solution. I don't know if some Open Source IMAP server has been ported (to PASE).
Another way to deal with the outdated crypto would be to establish a (linux based) mail gateway in front of the i. Incoming mail goes to the Linux machine with all the modern crypto stuff, and is passed to the i with older or even no crypto at all (which isn't a big problem if it's in the same LAN). Outgoing mail works the same, but just backwards.
On important thing to consider is that there needs to be some means to prevent backscatter: The mail gateway in front *must* know about valid mail addresses so it can outright reject johndoe@xxxxxxxxxxxxxxx while the SMTP connection from an internet sender is still open.
Contact me privately if this might be a good way to go, because it's no longer related to IBM i.
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