Multiple email accounts but only one working

I have 3 email addresses. When using Outlook express only one account is read. Customization in Comodo antispam is the same for the 3 accounts : toto@free.fr ; pop.free.fr , smtp.free.fr. When disabling comodo antispam, every thing is OK ???

Are all of the three email accounts using standard ports (ie, 25, 110)?

Is there any encryption/SSL on any of the email accounts?

From your post, it appears that they are all with the same email provider; is this correct?

LM