Can't send mail after upgrade - mysterius backslash in domain

Using Exchange SMTP over port 587 and none of fixes in this forum do not work.
I had a look with Connection Doctor and in this log entry I noticed something interesting:
WROTE Sep 21 21:33:00.133 kCFStreamSocketSecurityLevelNone -- host:mail.myhost.ee -- port:587 -- socket:0x11867c970 -- thread:0x11b9a4ea0
EHLO hullumac.elion\.ee
A BACKSLASH "\" in address "hullumac.elion\.ee" ??? ...and Mail gets answer:
READ Sep 21 21:33:05.323 kCFStreamSocketSecurityLevelNone -- host:mail.myhost.ee -- port:587 -- socket:0x11867c970 -- thread:0x11b9a4ea0
501 5.5.4 Invalid Address
Seems to me that this "\" is problem, but from where it comes???

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...

Similar Messages

Can no longer send mail after upgrade. Says server needs password. Server says down not support a password. Any thoughts?

After up grade I can not send mail from road runner account. Message says server needs password, server says it won't support a password. Any thoughts?

UPDATE: I was able to set up the account using Eudora, and it worked fine. I guess it means that there's something funny happing with Mail.

Can't send mail after 10.5.6

Anyone having trouble sending email after upgrading? I can receive it fine, but sending has been a no-go for nearly 24 hours now. All my server settings are accurate and my ISP reporst no issues on their end.
What gives?

I've been having this problem for weeks, and many other have too, if you go back through the forum. In my case I'm using a Sprint mobile broadband modem (Sierra Compass 597) on my MacBook Pro. I can receive but not send - but erratically. Sometime is works just fine. I've done all the troubleshooting and had long conversations with the support people at my isp. Works for awhile, but then deteriorates.
But I CAN ALWAYS send over my old dial-up land line modem!
And as for the Sprint modem - it works just fine on my wife's PC to the same isp.
She's considering replacing it with a Mac, but not until I solve this issue!
Every day I check for a software update - but in vain. I even took it to the Geniuses at my local Apple store and they were stumped.

Can't send mail after mavericks upgrade

MacPro user (mid2010)
I am using a third party email address and am currently with O2 Broadband. Since upgrading to Mavericks, I am unable to send emails using the Mail app.
My outgoing mail server is: relay.o2broadband.co.uk
And I'm using the default ports.
I am aware that O2 Broadband customers are being moved over to Sky but my account is still with O2 right now.
I can send mail just fine on my Laptop which is still running OSX 10.7 so I'm fairly convinced this issue has something to do with Mavericks.
Anyone else suffering the same issues? I'd really appreciate any advice anyone can offer.

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...

I can't send mail after last security upgrade

I haven't been able to send mail using the mail.app via Charters STMP since I applied the last security upgrade from 10.4.6 to 10.4.7. Any ideas?

I've tried rebooting the computer. Resetting the cable modem. Spoke with Charter and it's not on their end. So I'm stumpped. Any clue?
Thank you in advance.

Can't send mails after 10.4.6 update

Well, the topic pretty much says it all. After I upgraded to 10.4.6 I can no longer send mails. This happens with three completely unrelated SMTP servers, so I'm pretty sure it's a Mail problem. Receiving mails works without any problems and excepte the return of the ugly bubbles everything else is working fine as well.
I already re-entered my login values, didn't change a thing.

I didn't even update. One day Mail just stopped sending mail. Can't remember doing anything specific. Looks like a common problem these days from having read several discussion boards. I'm on the bandwagon. Reinstalled, created new accounts, triple checked, checked with ISP, disabled password authentication...
I even tried downloading another mail program, Revolver, but that can't send either, so I'm stumped, both recieved mail just dandy. In Revolver it gives a better hint to the problem "SMTP Error 103 (Name Resolution Error)", Doesn't help much though. As I understand, 103 is just a general error anyway.

Cannot send mail after upgrading to Lion

Can anyone help.
I upgraded to OS X Lion, and since then I cannot send mail from any of my accounts.
Nothing wrong with them. I can access, receive and send with othe Mail programs, as well as from my iPhone and iPad.
I have deleted, and reconfigured my accounts, and no luck.

I am having the exact same problem as Steve Kennedy a few posts back.
"When I press send I watch the fan for a couple of minutes before seeing the error message that invites me to select another server or try later. The outgoing mail server that shows up as being unusable is MobileMe (MobileMe). When I select smtp.me.com, I can send. Sometimes I can even send a couple of messages before the problem returns.
I'm using Lion and Mail 5.0 (1244.2/1244.3) on my iMac (mid-2010) and Verizon FIOS. Never had this problem with Snow Leopard or earlier. Don't have it with my MacPro running Snow Leopard on the home wireless network. Don't have it when using MobileMe mail on the Web, but that's a slow alternative."
I am getting REAL tired of the Lion quirks. <y desktop rearranges itself when it feels like it. Nothing consistent or repeatable. The folders just all appear on the right side and disregard how I have them organized on the desktop. I have set all of the recommended settings to no avail. A mind of it's own.
Help us Apple. Mail is almost unusable.

Can't send mail after updating to 10.5.5

I don't know if it could be coincidence, but I had been receiving and sending email all day long until I installed the latest update (10.5.5). Since the installation completed, I have not been able to send mails (receiving is okay). The program keeps trying, but just keep son trying with nothing happening. I checked the SMTP's for my accounts — nothing has changed there. Don't know what's up.

Consider yourselves lucky. I can't send or receive email or connect to the internet AT ALL since installing whatever updates came down this morning (9/24/08). I can connect to my wireless and I can connect to AT&T using my USB wireless 3G thingy, but I can't access email or the web. Problem started immediately after this mornings Software Update rebooted my machine. I'm downloading the dmg on my work PC now and am hoping reinstalling will fix the issue(s).

Can't send mail since upgrade

Ever since the latest upgrade, I can't send out email from either email account. The error message says "Cannot Send Mail—The sender address was invalid." Never happened before.
What is this and why can't Apple leave something that works alone? Jeez.

I might be able to offer a solution for sending from the Verizon account. Go into Settings>mail,contacts and calendars. Tap on the Verizon account, then tap the outgoing server. In addition to the standard verizon server, there should be an AT&T SMTP server. Tap that server and switch it on. Close out of the settings and try sending your email again. It should then send through the ATT server.

Can't send mail after resetting my googlemail password

Hi. I find I cannot send mail messages although I can receive them fine on my Mac Mini. This follows having reset my googlemail password. I can send and receive with no problem on my other Apple devices: iPhone and iPad. The Mac Mini is updated to the latest OS. Any helpful hints would be very gratefully received!

So, I seem to have resolved the problem by resetting the password in Mail>Preferences and editing the SMPT server list from the drop down in Outgoing Mail Server (SMPT) by putting in the new password. But thanks for looking at this, hopefully, this might help someone with the same issue.

Can't send files after upgrading!

Please help! I just upgraded to Tiger from Panther, and now I can’t send files with iChat. I followed Apple’s instructions about opening up port 5180, but I had to create the AOL IM option because it didn’t appear in my choices. I really need to be able to send and receive files—and keep my firewall running. Thanks very much. Peace.
iBook G3, 1.42 Mac mini G4 DVD±RW Mac OS X (10.4.8) 640Mb SDRAM, 1gb DDRAM

hi Muzikjunky,
Ok. Sometimes if you have a modem or router that requires you list protocols when doing Port Forwarding it seems to get confused that port 5190 is open to TCP and UDP. Some devices just seem to work better if you do the stuff below.
If this is the case then go to iChat > Preferences > Accounts >AIM account > Server Settings tab and change the port to 443
This can only be done when you have logged out of AIM.
Log back in afterwards.
9:08 PM Wednesday; February 14, 2007

Can't send mail after trying New Port

I've read the discussions regarding sending mail via smtp. Tried under mail serves smtp.mac.com, smtp.me.com, smtp.me.com:primagirl. Tried to change to port 587 from 25. with SSL and without checked. Nothing can be sent! Please help!

Hi, here are the settings for outgoing mail through MobileMe:
Server: smtp.me.com
Port: 25
SSL: On
Authentication: Password
Username: MobileMe account name without the @me.com
Password: Your MobileMe password.

Can't send Mail after Mac OS 10.4.3 Update

Darn, I wish I hadn't run the latest update on a number of Mac G4s. I had no issues whatsoever with Mac Mail 2.0 using IMAP on our Exchange server until the latest update. Currently users are having sporadic issues with mail getting stuck in the outbox. I have spent the day reading the forum and trying various things (trashing the outbox, deleting preferences, using OnyX, etc). I can send fine from OWA and even from Entourage but not Mail mail. The Connection Manager shows I'm connected fine to both IMAP and SMTP but the Activity Viewer basically just stalls. I get no error messages. I have a hard time believing it's anything other than the Mail client or some software it utilizes, having been corrupted from the upgrade. Does anyone have any suggestions

Doh! I finally ended up discovering exactly what my issue was with not being able to send attachments in any E-Mail (Mac Mail, Entourage, etc.) on a Mac. The 10/100/1000 NIC on the MS Exchange Server was manually set to 100MB and plugged into a gig port on the switch. Just thought I'd throw it out there in case anyone else has the same issue.

Can't send mail after AirPort update

After I installed the latest AirPort update, I can no longer send emails through Mac Mail but I can still receive them. I can send emails if I plug my MacBook directly into the cable service router through the ethernet port. According to my ISP (Cox), I have Mail configured to work properly. Is there a setting on the AirPort that I need to change?

The error message says:
"The sender address [my email address] was rejected by the server smtp.east.cox.net.
Select a different outgoing mail server from the list below or click Try Later to leave the message in your Outbox until it can be delivered."
There is only one server I can use. There is a button for the Connection Doctor, and that shows all green lights.

Can't send mail after update to 5.0.1

After updating to 5.0.1, I can no longer send composed mail or respond with a reply. Works fine if I go out of mail, open AOL from safari. When I try to send from mail, a box opens stating message sent to outbox as respondant does not allow relays. Any ideas???

Tried this, no difference. I was on the Apple Care service for over 1 hour with same result, no change. Any reply or new composed mail is sent to the outbox file, message states, " a copy has been placed in outbox. The recipient ...... Was rejected by the server because it does not allow relaying." same reply or message sent from mail started from safari goes through perfectly.

Can't send mail after upgrade - mysterius backslash in domain

Similar Messages

Maybe you are looking for