The first message means you cannot log into the SMTP server. For whatever reason, it is showing this error regarding the username and password. It could have something to do with the fact that you have more than one CL account. We'll check that later.
The second one has to do with a different SMTP error, and that sounds like it is hitting the wrong port, even though you are saying you have corrected to their recommended port. Many ISP email providers will not let you send mail through their SMTP server when not on their network, such as connected by the computer or on your wi-fi at home, unless you can be authenticated. This has something to do normally with the SSL setting and how you are authenticated.
Also, when deleting and adding similar accounts back to the phone, it can also keep/carryover SMTP settings. If you go into Settings>Mail, Contacts, Calendars>tap on the primary account, hoiw many SMTP servers are listed there? There might be a primary and there could also be Other SMTP servers. This may be where your problem lies. Check the settings in the Primary Server. Because you have two accounts, and they of course, have different username and passwords, they could be causing conflict as to which SMTP server is checked there. See if the correct SMTP server is serving the correct account. You can make adjustments in each account area.
We can work from there.