To update or verify the settings for an Thunderbird IMAP account on vmail01.peak.org, start up Thunderbird and go to Tools/Accounts Settings:

First, let's check the Outgoing Server settings --- click on Outgoing Server on the left, then the vmail01 server on the right, then Edit:

Important settings in the SMTP Server window that will pop up:

Server Name

This should be set to vmail01.peak.org unless otherwise directed by Peak Support.

Port

Identifies the outgoing mail service; it must be 587. Port 25 is the default, but is restricted, only allowing access from spam filter systems so that spammers can't bypass them.

Use name and password

This must be checked, and the User Name set to your actual mailbox email address. Note that this may not be the email address you actually use, in particular, if you have a private domain address forwarded to one of the Peak owned domains. If you're not sure, our support people can clarify the situation for you.

Use secure connection

This must be set to "TLS": it makes sure your password is protected when your mail program logs in to send mail, and is required by vmail01. TLS uses a different way of starting SSL than the SSL setting does; the latter won't work with this server.

Click OK to close the outgoing settings, then click on Server Settings in the relevant email account:

Server Name

This should be set to vmail01.peak.org unless otherwise directed by Peak Support.

Port

Identifies the IMAP mail service; it must be 993.

Use name and password

This must be checked, and the User Name set to your actual mailbox email address. Note that this may not be the email address you actually use, in particular, if you have a private domain address forwarded to one of the Peak owned domains. If you're not sure, our support people can clarify the situation for you.

Use secure connection

This must be set to "SSL": it makes sure your password is protected when your mail program logs in to send mail, and is required by vmail01.