My mail is saying cannot verify account all of a sudden

Hello Nicola98,

It is possible that some of the server options have changed recently. I would recommend using this to get the settings from the email provider directly and use that information to setup the account.

Account Information
Questions	Answers	Notes
Full name:	Your name as you would like it to appear on messages you send, such as Tom Clark.
My email address:	@ .	Such as tomclark@example.com.
My email provider:	The name of your email service provider such as Yahoo, Gmail, Comcast, or AOL.

Incoming (POP or IMAP) mail server settings
Questions	Answers	Notes
Account type: Choose one.	POP [ ] IMAP [ ] Exchange IMAP [ ] Exchange 2007 EWS [ ] (see below)	Your provider will understand which Account type to select.
Description:	Used to title your inbox in Mail. Such as "Tom's email"
Incoming mail server hostname:	Such as mail.example.com
Username:	Example: tomclark or tomclark@example.com
Password:	Used to protect your email account. See thisarticle to choose a good password.
Incoming server port number:	Your provider will understand which port to select.
Incoming server authentication method: Choose one.	Password [ ] MD5 [ ] NTLM [ ] Kerberos [ ] None [ ]	Your provider will understand which authentication method to select.
Incoming mail server supports Secure Sockets Layer (SSL)?	Yes [ ] No [ ]	Your provider may call this Transport Layer Security (TLS).

Outgoing (SMTP) mail server settings
Questions	Answers	Notes
Outgoing Mail Server:	Such as smtp.example.com
Outgoing server port: Choose one.	25 [ ] 465 [ ] 587 [ ] Other:	Your provider will understand which port to select.
The outgoing mail server supports Secure Sockets Layer (SSL):	Yes [ ] No [ ]	Your provider may call this Transport Layer Security (TLS)
Outgoing server authentication type: Choose one	Password [ ] MD5 [ ] NTLM [ ] Kerberos [ ] None [ ]	Your provider will understand which authentication method to select. If "None", ask for the Internet Service Provider off-network outgoing (SMTP) mail server settings to use when you are connected to the Internet from outside your ISP; for example, a WiFi hotspot at your local coffee shop. Use the next chart to denote these settings.

Internet Service Provider off-network outgoing (SMTP) mail server settings Note: Only use this section if you checked “None” for Outgoing server authentication in the above section
Questions	Answers	Notes
Outgoing Mail Server:	Such as smtp.example.com
Outgoing server port: Choose one	25 [ ] 465 [ ] 587 [ ] Other:	Your provider will understand which port to select.
The outgoing mail server supports Secure Sockets Layer (SSL):	Yes [ ] No [ ]	Your provider may call this Transport Layer Security (TLS)
Outgoing server authentication type: Choose one.	Password [ ] MD5 [ ] NTLM [ ] Kerberos [ ]

From: Configuring Mail for your email account

http://support.apple.com/kb/ht1277

Take care,

Sterling

So, I contact the email provider directly to get this information???