CPG1.3.3 Sends email to some domains not others?

[gene-photog]

Strange problem (at least to me)...

Using Fedora Core 3 and Coppermine 1.3.3.

I can send with the Evolution Email package emails to my-email@sc.rr.com and to my-work-email@mycompany.com

The problem is that Coppermine will send registration emails and ecards to my-work-email@mycompany.com BUT WILL not
send emails to my-email@sc.rr.com.  This is not just to my-emai@sc.rr.com but others on sc.rr.com

The server is on sc.rr.com.

I am using POP3/SMTP for emails

Any help would be appericated,
Gene

[OmegaGOD]

Are you getting a bounce-back e-mail. If you are will you please post it here. When you say "others" on sc.rr.com are not receiving e-cards are you stating that some are or NONE are able to receive e-cards?

[gene-photog]

I don't have a problem sending with the email app...only with coppermine.

Coppermine can send registrations & ecard to the non sc.rr.com people (limited test to be sure).

Get no resonse saying coppermine couldn't send to the sc.rr.com people (again a limited test).
Is there a place I should/could check for a log file?

I have several family members in the house here that have xyx@sc.rr.com, etc...they never get the registration emails or ecards.

Gene