Can't send mail after mavericks upgrade

yeah, I'm having same problem sending with apple mail app. I seem to be receiving OK. Using a third party app called Airmail that seems to be working fine. No solution to apple mail app though, sorry.

One thing I noticed is that all outgoing servers were listed as offline in apple mail account preferences.

yeah me too, I can't send emails from Mail on my MacBook Pro. I too have noticed that all the outgoing servers are 'offline' in preferences.

Anybody know the solution?

SMPT cannot connect for either. I did not change the settings and haven't been able to send since upgrading to Mavericks. There hasn't been any answers provided. Any help is much appreciated! This is a complete waste of my day

I thought I had fixed it by switching to non-SSL on outgoing - it worked. Once. Now back to same problem. Anyone else figured this out yet?

I actually have this working now. I had to call my host and they walked me through it. I used the long way in, vs. just mail.mydomain.com Look on your host's email support page and there should be something called host. then some numbers perhaps? I'm on hostmonster.com So mine looked like this: host110.hostmonster.com

It worked for me. I also had to change the inbox port to 993 and the custom port is 465. I had to delete the SMTP servers and make them new, but, they work now, so that's okay!

I hope this makes sense and helps someone out!

I'm working now too. At first I was unable to deselect Use SSL. After a few restarts I was able and it started working just now. Not sure if that was actual problem or not. I also deleted all outgoing servers except the one I needed (which wasn't working), so maybe that had something to do with it. Don't know, but it's working now.

Nope, afraid that didn't work. I'm using 465, tried both SSL and nonSSL, tried deleting and rebuilding, tried deleting the entire account and rebuilding. What a waste of a day.

You check Mail > Window > Connection Doctor for any errors. If error is authentication related you may need to remove keys associated with the email account from Keychain Access.

Hi,

same happend to me. After upgrade were all smtp servers offline. I switched my imac completely off and turned it on after 20 s. Amazingly it worked!

I have wasted an entire afternoon. Thanks alot, Apple--feels like I've been working on a Microsoft product all day. I have tried everything above--application-specific passwords, turning SSL off and on, rebooting MacBook Pro numerous times, etc. Now, whenever I quit Mail and fire it up again it sends another copy of the message in the Outbox and leaves the copy in the Outbox. Messages I manage on my iPhone 5s do not move into/out of the folders on my MBP.

Apparently Mavericks does not play well with GMail. Sure hope they figure out this nonsense--this is costing me very valuable time!

Buy Airmail - $1.99 in App store. Handles all of your imap and POP accts. Just updated for mavericks.

Before I finally got it working (and I'm not even sure how), I tried PostBox and Airmail and had the exact same outgoing mail problem. So it appears that there is something more fundamental in the OS happening. From a couple of these other threads (and I read them all out of desperation...) it sounds like there's some funky sync thing that has to happen with certain host email configs, and Mavericks doesn't do it perfectly at first. Somehow (yes I'm showing my tech ignorance) some configs require a login to IMAP/POP3 immediately before allowing access to the SMTP to send, presumably in another attempt to block sending spam by third parties. The timing of the dual login has to be tighter in Mavericks? But this aligns with my experience in that an account (I had three that had problems) would receive an email and them boom the SMTP would work. So I tried sending an email from my phone to be received on the problem account and tried to send from that account right at the same time, and somehow it worked. Once it worked, it stayed working. However I still cannot get SSL (port 465) to work - I had to change everything to non-SSL on port 25 or 26. Even though my iPhone and iPad will work...

But only for a short time. Now I am back to "off-line-servers". SSL ckeck/ unckeck or port change did not help. I have to wait for the update.