User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.5) Gecko/20031007 If several SMTP servers are listed, the first one in the list is used to send the message (rather than the one marked as Default). In addition, if sending fails, the error is reported without trying to send through the second server. Reproducible: Always Steps to Reproduce: 1. Open the "Mail&News settings dialog", select Outgoing Servers. 2. Select "Advanced". 3. Clean the list and add two outgoing mail servers (first one bad, second working). 4. Select the second server as default. 3. Try to send a message. Actual Results: An error is reported Expected Results: It should have sent the message successfully.

Your second problem is Bug 226017. The first problem could be the same as in Bug 170089, Bug 222064 and Bug 208806.

In the "Advanced Outgoing Sever (SMTP) Settings" dialogue box, NO matter which SMTP server is set default, always the first/top SMTP server in the list is used. Fail as a different ISP is used.

Mail/News has a poorly designed SMTP user interface. This type of problem is normally an enhancement, and would thus be of low priority to developers. However, the bad design of the SMTP user interface is causing a number of users to file spurious bugs. It is also resulting in a lot of grief (the magnitude of which is not recognized, because it is dispersed between a number of different bugs). This is a problem with both Mozilla Mail/News and Thunderbird. It remains a problem even in these, more recent versions: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.6) Gecko/20040113 Mozilla Thunderbird 0.5 (20040207) Although no single SMTP bug has that many votes, the sum of votes for those bugs partially or wholly dependent upon UI problems is rather large. These bugs aren't really bugs, but are users who are mislead by the UI: bug 228643 - Outgoing Server settings ignore the default bug 170089 - default server value not being used to send mail. Mail cannot be sent. bug 222064 - don't remember the updated default SMTP server. Can't use more then one SMTP server These bugs all mention or are in part due to bad UI design: bug 202468 - 3 votes - Simpler, more consolidated UI for SMTP server settings bug 52384 - 27 votes - difficult to define multiple smtp servers and quickly/automatically switch between them bug 154453 - 2 votes - SMTP setting dialog totally corrupted bug 218518 comment 4 and comment 5 - unable to select alternate SMTP server in Account Settings bug 226017 - Should try other SMTP servers when default doesn't work Note that all of these bugs can't simply be marked closed and consolidated into one bug (most contain more than one issue with the way SMTP servers are entered & organized). However, I suggest that the UI aspects of these bugs be consolidated into bug 202468 . Let's all vote for it, and hopefully get some work done on this UI! Andy

*** This bug has been marked as a duplicate of 170089 ***