when replying to an email, I receive this message. It is a POP3 account. I've experienced this in the iPod touch and reset the touch, it worked. Tried the same in the iPad, no luck. I've checked and rechecked that the smtp address is correct. I can receive but not send..help
A follow up to my earlier post: I seem to have solved my problem, but as someone else commented, I'm not completely sure how. The big issue was that on the iPad my .mac account thought I was using my ameritech.net (ATT) account as the SMTP "Primary" server and would not allow any changes, including entering a password. So I finally went back to the Mac and changed my .mac server settings there to use only the .mac SMTP server, waited for MobileMe to update the iPad, then was able to change things. (The iPhone4 had not had any of these sending problems.) But I then had to go through each account on both devices and re-enter passwords. Part of this is that Ameritech (ATT) wanted every account "verified". Some would revert to the previous state, but I finally got them all the correct way and things seem to be working.
What I still don't understand is why it went bonkers in the first place. When I got the iPad, everything worked fine, then suddenly, with no software changes, this craziness started!? Oh, well. Have since run the iPad update and things are still working.
I'm having the same trouble with outgoing mail. I've spent hours trying to get it to work with no sucess. I think it's the i-Pad and not me judging by the posts. I'm reading corrections that seem to be contradictory to each other yet still work, or don't.
My question, does anyone think Apple is aware of the problem? Does anyone think Aplle has staff checking these forums. I would If I was Apple.
aahmie's solution was the only one that worked for me -- resetting the iPad by holding the power key and home key down until reset.
SSL turned on and off, authentication left blank then filled in, deleting and reentering account, syncing via computer for settings then deleting and reentering manually -- NOTHING has worked for 3 months until the resetting of the iPad.
Good luck. This needs to be prominently displayed on Apple's support site. (Ironically, one of their suggestions is, if all else fails, to get a gmail account and route all your mail through it. Wow. That's pretty cheesy...)
I have had the same problem since I have had my iPad. I have tried everything short of resetting everything. Today, out of frustration, I called Apple. The nice tech gal asked me to send an email to myself at the email address I was using on my iPad. I did and it went through with the other 10 emails I had in my out box.
The only thing we could figure is that by sending an email to myself, the system (or ISP) got that it is a valid account and therefore will now send emails.
I have had this same problem with my iPod Touch but this same thing DID NOT fix my Touch.
Another thing you may want to look at is turning off the SSL for the Outgoing SMTP server.
I mentioned that I had the same problem with my iTouch. Found the solution and this may be of assistance with the iPad also for those that are having problems.
Solution discovered.
On the Mac the ports used for the SMTP server are set to the Default (25, 465, 587) however the default on the IPod Touch is port 587.
Cox apparently uses port 25 on it's SMTP server.
Made that change on the IPod Touch and all is fine.
I made the same change on my iPad and now all is well.
If this is true for Cox people, others should look at this with their ISPs.
I tried aahmie's suggestion and most of the other suggestions posted and I still get the message"The sender address was invalid". Any further suggestions? I receive mail. I have configured the iPad in the same way as my iPhone, from which I can send and receive messages so I don't know what the problem is.
FINALLY something that worked. I turned off the SSL. Thank you so much.I've had my ipad since they first came out and can send email for the first time today.
Guys
I just got an iPad and configured my POP email. I was able to receive and send emails for some time... but not long: after a couple of days , I could receive but not send emails. "Sender's address invalid" error 😟
All the fixes on this post make me think ... The fixes are so different: sometimes it is just an ISP setting. OK, so that's all right. But when the ISP settings are OK... And in my case: it worked ! But for some reason it is now broken.
Maybe there is a bug in the email account settings part of the iPad!
Only Apple can help ...
Tried that. Still won't send. Wish only to find way to delete incorrect address from multiple addresses on existing email. I am unable to do that. Do not wish to delete and retype the email.
Tried that. Still won't send. Wish only to find way to delete incorrect address from multiple addresses on existing email. I am unable to do that. Do not wish to delete and retype the email.
I am having very similar issues. I have been sending and receiving email with no problem for a couple of weeks. I am now traveling, and using the hotel and airport public wifi and suddenly I'm able to receive email but not receive it. I am using a Roadrunner (Time Warner) server. I did nothing to change my email settings, but now every time I attempt to send I get the Mail Sender Address Invalid message. What gives? It doesn't seem like anything should have changed.
