@anthonyh said in Zimbra, fail2ban, CentOS 7, and firewalld: @scottalanmiller said in Zimbra, fail2ban, CentOS 7, and firewalld: https://arstech.net/zimbra-fail2ban-setup/ I came across that article and it's the most promising. Though it's still a iptables based fail2ban configuration. I'm not sure if it's as simple as changing the references to iptables or if tweaking it to work with firewalld is more involved. I suppose an option is to disable firewalld and install iptables. I've done that before in the past. Hmm... That's probably what they did, because you need to disable firewalld to enable iptables.

I used to use a barracuda 300 (for about 6 years) in conjunction with their cloud filtering for our on-prem Exchange 2010 server. I think there were 2 times that they had some sort of issue where they let a crap-ton of spam through, unfiltered. I have moved to Office 365 and am exclusively using their filtering. I think barracuda was better at filtering. Especially, when it comes to phishing messages that pretend to be from Microsoft's services. You'd think that Microsoft would be able to catch those better than anyone. Not in my experience.

@JasGot said in Exchange connectors: I need some help sorting out the exchange connectors on a server. We were called in to figure out a spam problem. It's not severe and during our exam, we are trying to check the configuration of Exchange and get mail test tools to be happy. Right now we are getting: Reverse DNS does not match SMTP Banner from mxtoolbox. This is a simple MS Exchange setup; One Exchange server on a domain, people connecting with MS outlook from inside the building on the domain and from outside the building using Ms Outlook, and two copiers that can send e-mail. The issue is all the receive connectors. It's not clear to me which one mxtoolbox is seeing. They are: Client Frontend EXCHANGE Client Proxy EXCHANGE Default EXCHANGE Default Frontend EXCHANGE Outbound Proxy Frontend EXCHANGE Scan2EMail I'd like to know what each one represents. ie; I presume Frontend mean Internet facing, but I'm not sure. Also, do internal MS Outlook users connect to a receive or send connector? (or both?) Thanks. You should change the ELHO name on all of them so it matches your external URL (Which in turn needs to match your Reverse DNS name). The Outlook clients connect to the Exchange server and Exchange sends the emails they do not connect to the connectors.

@huzefa22 said in Same subdomain name internal and external i have an issue with the DNS, specifically emails: @Dashrender when i ping mail.abc.xyz.com i don't get a reply, the SOA is the primary and the secondary domain on the local domain. i don't know if this is what you were asking. Regards, Huzefa Never test DNS with ping. Test with nslookup. Whether you can ping or not is a factor of many things, DNS just one of them and only sometimes. nslookup tests DNS and nothing else.

He only sent me a few hundred thousand, I feel ripped off.

Good to know, I use Ubuntu/Debian so I will check for that.

@travisdh1 said in SPAM Filtering with Zimbra: @dbeato I'm a fan of using their RBL list. Anyone know if that's still available for free? @travisdh1 also the server is b.barracudacentral.org

@dbeato said in Exchange / Office 365 Auto Response from Public Folder: @scottalanmiller said in Exchange / Office 365 Auto Response from Public Folder: @travisdh1 said in Exchange / Office 365 Auto Response from Public Folder: @scottalanmiller said in Exchange / Office 365 Auto Response from Public Folder: We have a public folder on Office 365 that is email enabled, the customer would like an auto-response from the public folder. I'm not sure if that is even possible. Wouldn't that be an auto-response setup from one of the accounts that receives those emails? Does that work with a public folder? Yes, with Folder Assistant through Outlook. Otherwise you can create a rule for incoming emails through Office 365 to accomplish that too. Yeah, seems... poor. Found this for doing it through Outlook, which would be unreliable and clearly not useful. https://www.codetwo.com/admins-blog/setting-public-folder-auto-reply/

@mrwright4hire said in Mail stuck in Office 365, Enterprise Exchange queue!: @dbeato said in Mail stuck in Office 365, Enterprise Exchange queue!: @mrwright4hire said in Mail stuck in Office 365, Enterprise Exchange queue!: A few users are having issues sending out emails. Not everytime, but intermittent. Has anyone experienced this type of issue before? I can use all the help I can get. I would like to know how to release the emails and avoid emails getting stuck again. In advanced, thank you for your efforts. Have any of your users been not able to send at all? I am not seeing that right now. Great question dbeato! Here's the thing, I myself tried to email the same address while monitoring it from Barracuda. Nothing showed up as going out. It's strange cause we received email from the address. So it is on the received end of Barracuda?

@pete-s said in Web hosting + (or not) email: keep separate: This is somewhat ridiculous. The entire premise of Microsoft's offering is vendor lock-in. Of course you are hostage to Microsoft. Of course they will keep integrating their services until it's impossible for you to change providers. And when they raise their prices you will pay. It doesn't make sense to fool yourself into thinking something else. If you want separate discrete services you have to stop using O365 because it's already a bundle of services - even without email. Unless you only want email from them, then it's not too locked in. Just not very good.

@dustinb3403 said in How Do You Stop Office 365 Low Severity Alert Emails: As a general thought on this, automatic mail forwarding could be a compliance issue, so make sure to keep this in mind before you go turning off alerts that might be a compliance issue later on. . . Automatic mail forwarding is a "every few hours" task. So these alerts are a ridiculous amount of crying wolf. It's created a "zero belief" system in MS alerts. At this point, there are no alerts, just spam, is how it is seen.

@matteo-nunziati said in Outlook 2016 Export to PST Missing a Lot of Data: @scottalanmiller said in Outlook 2016 Export to PST Missing a Lot of Data: @obsolesce said in Outlook 2016 Export to PST Missing a Lot of Data: You can right-click on the mailbox, or a folder, and in properties, you can see how much data is there versus on the Exchange server. Most is there, for sure. But definitely not "all". Confirm. I got always this end result. This is just best effort. Not complete at all. That's just crappy, especially as Microsoft themselves recommend it.

You can use Powershell as well Set-MailboxAutoReplyConfiguration -Identity username -AutoReplyState disabled

@jaredbusch said in Does Office 365 Support Plus Notation in Email (+): @scottalanmiller said in Does Office 365 Support Plus Notation in Email (+): @kelly said in Does Office 365 Support Plus Notation in Email (+): The period notation is really annoying for me. I signed up [email protected] when it was in beta and this "feature" wasn't publicized. Years later someone else was able to register [email protected] and now I get DoTerra order details and the like. I have no idea what I don't get at this point. Don't know about a period notation feature. What does that do? And how do that not break email globally? The same way that + doesn't break it. It is outside of the RFC altogether. So as long as wtf ever service you sign up for lets you type it, then you can do it. As for what it does. Well [email protected] is a common thing. But someone that signs up to gmail with [email protected] can also receive email from email sent to [email protected] or even [email protected] Google simply ignore all periods on the left of the @ for gmail based email addresses. Gmail only, not GSuite. Wow, that's.... weird. I guess it works until they do something like the story above and screw it up.

@obsolesce said in Standard Email Signatures in Office 365 with Embedded Images: @pete-s you need to fix that... Done.

@scottalanmiller said in Zimbra SMTP Relay through MailGun by Rackspace: This is because you need to be using Zimbra's own version of the tools, not the OS ones.

Yup, basically just automating Postfix configs.

This would work on prem exchange. Probably works with a tweak for o365. Get-mailbox | get-inboxrule | remove-inboxrule

@dustinb3403 said in Getting PowerShell to provide me the EventLog details in an email: Yup. . . I'm an idiot lol. I set it to only look back 1 day and email me those results within the past day. This obviously would show blank results, since there are no 2013 events within the past day! Ha ha ha. Whoops!

I have seen this before and it is usually with IE or Edge and can login on Chrome or Mozilla Firefox. I also try to clear all the user sessions via powershell.

@dbeato said in AquaMail for ChromeBooks: @scottalanmiller said in AquaMail for ChromeBooks: @dbeato said in AquaMail for ChromeBooks: You can try Inbox (Only for Gmail though) https://inbox.google.com That's specifically what I'm avoiding because it isn't very good. AquaMail definitely blows that away. Great, I am trying it. It's not amazing, but it is designed natively as an IMAP client, which gives it an edge. It's not an add on feature.

@mailbear said in Zimbra Abandons UI Update Plans: Remember that MailBear is always here, always working on the latest technology. Then MailBear needs a webpage.

@computerchip said in Spiceworks: Error message: An existing connection was forcibly closed by the remote host.: @scottalanmiller "just toggle it back and forth" Yeah, that bit was pretty funny.

@scottalanmiller said in List All Public Folders in Exchange or Office 365 with PowerShell: Want to get a list of all of the public folders on your Exchange system, whether on premises or hosted, try this: Get-PublicFolder -Identity "\" -Recurse | Get-PublicFolderClientPermission | where{$_.Accessrights -eq "owner"} More on Get-PublicFolder from TechNet That's pretty cool. I was wondering why you were piping into every owner since you could create public folders in Exchange without delegating owners, but then I had remembered you can create them on the client side as well after a root or folders are created in Exchange and added to the client, which is explained in your first pipe. Thanks for the note.

@black3dynamite said in Setup Zimbra 8.8.6 on CentOS 7: If I were to set this up at home behind a Comcast gateway modem, I would need to setup MTA to do HostLookup Native? And to clarify, that is if you don't want to do split DNS.

@jaredbusch said in Installing MailSpring on Fedora 27, Modern Email Desktop Client: Ok, I dislike this Artificial limitation of 4 accounts. $8/month for an email client that doesn't even support calendars.

As the others have asked.... Outlook can use anything. It is often associated with Exchange, but there is no specific connection. Zimbra, GoDaddy, anything could be the email that Outlook is showing you. And your question is about the email server, not Outlook. So knowing that someone has connected with Outlook doesn't give us any starting point.

@mike-davis said in Spam filtering software: @tech1 Sometimes it helps to take a step back and evaluate what you're really trying to do instead of look for a product for what is already in place. Liquid mail claims to filter, but clearly it's not working. o365 and gmail do a great job, so why not consider them? It would probably be better to filter it before it hits the client. And for a single user.... the cost of looking at another option is too much. Office 365 is $4/mo... that's $48/year. That's hosting, storage, support, everything. And that's a top end, luxury level service. It only gets cheaper from there.