Why is my mac.com outbound email no longer working?

Well, it started for me this morning. I did all the troubleshooting that I recommend here, with no resolve.

I rebooted in safe mode and three emails from my iCloud sent. But back in normal mode, nothing.

I spent an hour with Apple Support via phone. He indicated that there is a problem with iCloud which is affecting outgoing mail that the engineers are working to fix since sometimes yesterday.

FWIW I have an @iCloud.com email address and 2 aliases.

iCloud mail is seemingly working again: ( iOS 12.1 Mojave 10.14.1 )

I signed out of iCloud on my mac and devices. restarted. Signed back in.

If not, use the web version.

Hi, my issues hav resolved now. All mac.com aliases work again. I have tested to send from iPhone, iPad, iMac (web) and PC (web). All works well again. I did update my iPhones and iPads to 12.1 but not sure if that did it. I guess Apple have just sorted out their servers...anyway good luck to you all!

UnFortunately I have seen other posts on the community (today) that it is still not working for some.

After I posted this morning I started having problems again. I guess will take a little more time to get it to be stable. At least we know the engineers are aware of it and are working to fix the problem.

Can you still send and receive from those other Mac.com addresses today? 🤔

No. Web version isn’t working for outgoing @mac addresses either.

Ditto with me - I've kinda found relief that there's someone out there with the same problem as me (that only ever came up today after having the very same email address for 15 years, too). Sorry I don't have a solution yet, just hoping a little camaraderie will save us both some sanity and will tell the Apple Gods to fix this sh*t. 😕

All of us with @mac.com addresses pretty much know we have @icloud addresses. The issue is that we have all used out @mac.com addresses for almost two decades without ANY changes. If we suddenly can't use our @mac.com outgoing or incoming mail servers and are forced to change to one of the @icloud ones, could you imagine the ensuing chaos having to change your email address - one that you've had for all private and professional usage for YEARS? Sorry, just a vent here because I don't think you truly understand our problem here.

Same here. I cannot send emails from my @mac.com alias, but @me.com and @icloud.com aliases work fine. Stupid thing is that I have used my @mac.com alias for business for 17 years now and changing it would be a *real* hassle. Thankfully receiving emails is not a problem. I have been in touch with Apple about the issue but so far no success. Will keep at it and if solution presents itself I shall post it here.

Thank you - I'll do the same! Methinks it's affecting only us "oldies" - those of us with an Apple @mac.com email address when they first supplied an email server back in the *very* early 2000s. I remember the furore when they came up with the @icloud, @me addresses and I (and many other people) said YUCKO! Let us keep our @mac.com one, and they let us. I hope this isn't a sly way of forcing us to give up that address. Oh, the hassle and chaos that will ensue for us!!!

Same here - exact same problem is on my iPhone as well.

I've also noticed that when trying to compose an email, I don't have the choice to pick any of my other @mac, @icloud, or @me addresses in the "from" field, only the @mac one I'm having trouble sending from. This happens from both the Mail app as well as from iCloud online as well. Exact same issue. Exact same problem.

I am having the same issue except I am trying to send from my @me.com address. I am now having the issue on my phone and my Mac.

I have had the error on my Mac for about 10 days and just this morning (10/30/18) I am getting the error on my iPhone. I have not changed any settings.

The weird thing is it is only happening with outgoing mail, not incoming mail.

It appears that it is starting to slowly work. I just was able to send emails out- and I also sent one to myself and received it. I'm going to restart my mac and devices and see it that helps things along.

I also noticed while the server is down, it seems that two-factor authentication wasn't working. It just worked when I signed in to comment here.