Re: IBM i as email relay

Rich,

Good company when he was still alive:

Simon Coulter.
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On 8/7/2024 10:18 AM, Rich Loeber wrote:

Jeff,

"Fly by night"? Really?

Rich Loeber
Kisco Systems LLC
http://www.kisco.com

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On 8/7/2024 12:38 PM, Jeff Crosby wrote:

Good Afternoon,

V7R5 pretty up to date on PTFs.

In preparation for no longer using gmail for email relay we're working

with

a vendor to use a different relay. It so happens that the password is 69
characters long.

We have a couple Brother all-in-one devices that we (not often) email
documents to employees. They cannot handle passwords over 32 characters.
Also, our Tripplite UPS cannot handle passwords over 64 characters. No
problem, I thought. We'll just point them to the IBM i (in the cloud)

and

the IBM i can relay.

I found this article from some fly by night author (haha):

https://www.kisco.com/ibm-i-security-tips/ibm-i-smtp-relay-controls-2.html

I used ADDSMTPLE to add 3 *ACCEPT entries:

IP Address Subnet Mask
192.168.0.0 255.255.0.0
10.100.0.167 255.255.0.0
10.46.0.2 255.255.255.255

I point the Brother email settings to our IBM i internal IP address and

try

a test email.

Using port 25 gives this error at the Brother device

"Communication with the specified send e-mail server failed. It is

possible

that the network is busy or there is some problem. Please try again

later."

Using port 587 gives this error:

"The specified send e-mail server cannot be found. The Send E-mail Server
doesn't exist or the specified host doesn't support the service. Check

the

Send E-mail Server name and port number."

Which leads me to believe that I am reaching the IBM i when using port 25
because the error is different.

I also tried it with the IBM i email relay to the not recommended
ALWRLY(*ALL) in case I fubared the ADDSMTPLE stuff. Same errors.

A support person had me install Putty and connect to the IBM i on port

25.

Got a blank screen with no welcome message. We did the same thing with

the

service we're going to be using and got a welcome screen that said the
service was ready. The support person felt that the IBM i was not
listening on port 25.

However, the Work with IPv4 Connection Status screen shows that it is.

Remote Remote Local
Opt Address Port Port Idle Time State
* * 21 020:47:45 Listen
* * 23 001:36:23 Listen
* * 25 000:04:35 Listen

I then tried with port 26 and got a "connection refused" message. So I
think I am connecting on port 25.

I'm guessing the issue is on our IBM i, but don't know what else to look

at.

Suggestions?

Thanks.

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