@scottalanmiller said in Configure Mastodon to Use Zoho ZeptoMail for SMTP Email:

@PhlipElder said in Configure Mastodon to Use Zoho ZeptoMail for SMTP Email:

All of our mail servers are properly set up with a SmartHost, SPF, and DMARC. We don't have any reputation issues. That's a 2000s kind of problem.

No, it's current. Microsoft blacklists entire datacenters still. There's a lawsuit in Illinois about it that they lost. It's a very real thing still that RBL are used by the majors (like Microsoft, but not Google) and used to shut down entire ISPs and IP blocks. I've been brought in to help providers with these issues, it's a huge legal problem and if you don't get hit with it, it seems like it doesn't exist, and if you do get hit, it seems like there's no recourse (hint: there isn't.)

We're dealing with a client who has their site hosted in a Yandex.RU data centre and guess what? Yeah, some putz between their web server and ProofPoint has a sinkhole because Ukraine. The web server can e-mail @Outlook.Com because they have servers around the world but not ProofPoint.

We've had lots of issues over the years where one midbone/backbone provider either shapes or blocks packets from another because they're in a contract dispute. Poof. Packets gone.

@travisdh1 thanks! 🙂

@JasGot Intermedia doesn't' host as far as I know any Exchange Servers through Rackspace.

@scottalanmiller said in SAMIT: Stop Using Secure Email:

@JaredBusch said in SAMIT: Stop Using Secure Email:

Also, accepting insecure email is different than allowing your organization to send insecure email.

Very true. Accepting things insecurely is better than sending them.

I accept email in any way that it is sent. But all sent email is required to be TLS or it will not send. I have a couple of people that the boss cannot email because of it, as well as one prior customer that is still running an ancient ass GroupWise 6 email server. They email asking for one off support for their routers sometimes.

@scottalanmiller said in Send an Email via SMTP from Command Line with cURL:

@Pete-S said in Send an Email via SMTP from Command Line with cURL:

@scottalanmiller said in Send an Email via SMTP from Command Line with cURL:

@Pete-S said in Send an Email via SMTP from Command Line with cURL:

@Dashrender said in Send an Email via SMTP from Command Line with cURL:

@Pete-S said in Send an Email via SMTP from Command Line with cURL:

@scottalanmiller said in Send an Email via SMTP from Command Line with cURL:

First the command itself, showing gmail settings here by default but obviously fill in with your own details:

Does it work? I thought gmail required OAuth nowadays and you couldn't use plain username & password for authentication anymore.

gmail still allows the creation of app passwords.

OK, then it works for now I guess.

I always cringe when I see MSPs that set up their clients MFPs and other devices using random gmail accounts.

IMHO it's unprofessional and much better to use a real transactional email service for these kinds of applications.

It depends. If it is going out to customers, then it's weird. If it is for purely internal stuff then transactional email doesn't make too much sense. But if it is internal, normally you can just use whatever internal tool you already have.

Typical scenario with gmail is that someone sets up a MFP to use a random gmail address for sending alerts and scanned documents.

When the user scans the document it's often sent to his own email address [email protected]. So primarily internal.

Well, problem is that gmail saves mail sent over SMTP in the sent folder. Which means that the "printer guy", who if often not even an employee, can read all the scanned document that was ever scanned and emailed by logging in to the gmail account he set up.

And of course sent email coming from outside your domains might be flagged as spam. So people scan documents and it doesn't work. I mean the list of problems is long.

Well when lots and lots of companies still demand to only use Gmail already, it's not so weird.

You'd be amazing how often we get people requiring that they stay on Yahoo and AOL addresses for their businesses. I kid you not.

5f34099e-464c-4cd3-a7e3-f7845ca46d05-picardfacepalm.jpg

@travisdh1 said in Best practice MFP scanning to email for M365 shop?:

@dashrender said in Best practice MFP scanning to email for M365 shop?:

@travisdh1 said in Best practice MFP scanning to email for M365 shop?:

@pete-s said in Best practice MFP scanning to email for M365 shop?:

@dashrender said in Best practice MFP scanning to email for M365 shop?:

@gjacobse
what brand MFPs are those?

My Canon's do fine with 1.2 to MS.

Do you set up the MFP with credentials from a M365 user?

Yep, need a licensed account, and the lowest priced one doesn't work. I forget what it's called at the moment, but you need a license that includes the local apps.

Even if you go with option 1, not sure why the lowest account with an email account wouldn't work?

Because the lowest cost email account is online only. A local device can't login.

I don't understand - why can't a local device login? Sure it likely can't use modern auth - but normal SMTP logon should work (though I think MS is killing that)

Also, as I mentioned - i'm using a totally free account (a shared account - shared only with me :P) through option 2 in the link I provided.

@pete-s said in Email Send Error Research:

@dashrender said in Email Send Error Research:

@jaredbusch said in Email Send Error Research:

@wrcombs said in Email Send Error Research:

So would it likely to assume that Username and password are incorrect ?

If the computer receives email, then the username and password were likely correct. Outlook's account setup wizard will only ask for the information one time by default.

If this system has never been able to send email, what is likely incorrect is the email server configuration details.

If it once sent email, then mostlikely Outlook had a connection problem once and popped up the credentials box, then the user put in the wrong info.

This seems VERY likely at this point!

Probably entered the Windows password he uses to login.

Probably his personal email password from home.

@dbeato said in 550 5.0.350 Remote server returned an error:

@WLS-ITGuy said in 550 5.0.350 Remote server returned an error:

@dbeato said in 550 5.0.350 Remote server returned an error:

@WLS-ITGuy said in 550 5.0.350 Remote server returned an error:

571 Delivery not authorized, message refused

That messages means a lot of things but yeah Whitelist on their Spam Filter end, Adding your IP to your SPF record, check if there is anything on the body of the message triggering the block on their end (i.e. URL or site link).

It is Office 365 with Exchange - I have created all the records that Microsoft wanted me to.

So, just to be clear, this is 100% not on my end, correct?

It shouldn't be on your end, the message is coming from the recipient's end server.

Right, which means that they received it.

@Emad-R said in Researching Mailing List Email Server Options:

So you dont want the SMTP server part, just the sending to many and if a user opt to be removed that will auto reflect ...

Either way. If we handle the SMTP that's fine. If we don't, that's fine.

@wrx7m said in Exchange 2016 - NDR:

@scottalanmiller said in Exchange 2016 - NDR:

@Natchos said in Exchange 2016 - NDR:

@JasGot Awesome, thanks for the input. I'll look into SPF.

SPF is considered a requirement these days. And DKIM is heavily recommended.

People are starting to come around. I have been using DKIM for a few years for all services sending email outside our org. With O365, SPF and DKIM are part of the setup.

Same with Zoho.

@sully93 said in Simple Password Compromise on MailGun:

@scottalanmiller, which service did you go with after dropping MailGun? We are looking at a relay service and have MailGun on our list. This is a bit concerning that they shut you down like that. We're also looking at Postmark and SendGrid.

We made the call to just move to Zoho and get email hosted. We've been super happy with Zoho.

@flaxking said in Outlook SMTP Non-Compliant Sender Address:

Hmm, I just got the same when testing using telnet

550 5.7.1 Non-Compliant sender address. Code : -4

Oh, good info! Thanks.

@Dashrender said in MailCow in Production Datacenter:

Question for Scott - the customer wanted self hosted email? why?

It's a commercial mail hosting business. Among other things.

@Osvaldo said in Email not showing in Outlook, but Have Been Delivered?:

yes, it is intermedia

If it is on Intermedia, check the Admin quarantine
https://kb.intermedia.net/article/36031
Also use Email tracking
https://kb.intermedia.net/article/38036

@dbeato said in Zimbra 8.8.12 Released:

@scottalanmiller said in Zimbra 8.8.12 Released:

Wow, They release Open Drive and it only works up to NextCloud 13? NextCloud 16 is in RC today. What the heck?

Yeah, that is weird. Behind the times.

My level of impressed keeps slipping.