Rob RynskiOct 6, 2015 2:17 PM Re: Mail not working with El Capitan
Re: Mail not working with El Capitan
Rob,
Try following this instructions.
rkv_appleOct 1, 2015 7:47 AM Re: Mail not working with El Capitan
Re: Mail not working with El Capitanin response to Louis XIV
I have had two types of problems with Mail 9.0 which now seem to be resolved. Hopefully, this might be of some help to others who may have similar issues.
The first was that Mail seemed to be in an endless loop of downloading recent emails from an IMAP server. It would show the messages in the message overview column but would not display detail. They would then go away and come back. While this was going on I also was not able to send any messages. I was able to correct this behaviour by going to Mail->Preferences->Accounts and then for each account in the Advanced Tab I unchecked "Automatically detect and maintain account settings". I then quit Mail and when it restarted it appears to work fine. It loaded and displayed the previously problematic emails and messages which had not been sent were now sent. Subsequently, I was able to check "Automatically detect and maintain account settings" and things continue to work.
I then was able to notice a second issue. Although, this one was due to an enhancement to Mail which ran afoul of a workaround to a prior version's implementation for alias support. Specifically, there appears to now be explicit support for those who have multiple email addresses going to the same IMAP server. On prior versions of Mail one was able to have alias support by having comma separated email addresses in the single "Email Address field" of the Mail Account Information setting pane. In older versions you could only enter one variant of the Full Name associated with all of the comma separated addresses. So those that would use multiple addresses might choose to leave the Full Name blank.
With Mail 9 they seem to have implemented explicit support for email aliases. That is for a single account/imap server one can now have multiple pairs of addresses and full names. This is an enhancement. Although, I would have preferred that the migration would have converted my prior version's list of comma separated email addresses into individual alias entries. In my case I had over 50.
Additionally, the Email Address field in the Account information pane still has a hover display of "Enter one or more email addresses, separated by commas". Being able to enter multiple comma separated email addresses would now seem to be an error. It causes the send message to fail because it seems to be stringing multiple addresses together as if they were one email address and the SMTP server baulks at that.
I don't know what Mail was trying to do initially but unchecking "Automatically detect...", restarting Mail, and then checking it again seem to have gotten Mail working for me.