Hello,
I am trying to get the ecard function to send. I need to use SMTP settings (my ISP email acct.) I have entered the required info in the mailer.inc.php file (yes, I use Eudora, Outlook, Thunderbird, so I know what I'm doing here). 
($CONFIG['smtp_host'] = 'smtp.patmedia.net';   VERIFIED, my ISP
 $CONFIG['smtp_username'] = 'username';        My USERNAME, no guesses here
$CONFIG['smtp_password'] = 'password';).       My PASSWORD, certainly no guesses here.
But, whenever I click the Send Ecard, always get this message:
Ran into problems sending Mail. Response: 503 Error: authentication not enabled 
It appears to insist on using Sendmail (???). see debug info below. My ISP blocks incoming request for port 25, so, gotta use SMTP here.
I am running CPG 1.32 (standalone + pnCPG), on a Linux (Fedora Core 2), Apache 2, MySQL  3.23.58, and PHP  4.3.10. I am soon to move to Fedora Core 4 (PHP5, etc.). 
I'd really appreciate any suggestions/help that anyone could provide.
DEBUG INFO:
USER: 
------------------
Array
(
    [ID] => 2ec82d30d59334d4c73ac939d4ce3d92
    [am] => 1
    [lang] => english
    [liv] => Array
        (            
-  => 50
 [1] => 44
 [2] => 38
 )
 
 )
 
 ==========================
 USER DATA:
 ------------------
 Array
 (
 [user_id] => 1
 [user_group] => 1
 [user_active] => YES
 [user_name] => mikey
 [user_password] => ********
 [user_lastvisit] => 2005-03-29 20:51:17
 [user_regdate] => 2005-03-14 22:49:53
 [user_group_list] =>
 [user_email] =>
 [user_website] =>
 [user_location] =>
 [user_interests] =>
 [user_occupation] =>
 [user_actkey] =>
 [disk_max] => 0
 [disk_min] => 0
 [can_rate_pictures] => 1
 [can_send_ecards] => 1
 [ufc_max] => 3
 [ufc_min] => 3
 [custom_user_upload] => 0
 [num_file_upload] => 5
 [num_URI_upload] => 3
 [can_post_comments] => 1
 [can_upload_pictures] => 1
 [can_create_albums] => 1
 [has_admin_access] => 1
 [pub_upl_need_approval] => 0
 [priv_upl_need_approval] => 0
 [group_name] => Administrators
 [upload_form_config] => 3
 [group_quota] => 0
 [can_see_all_albums] => 1
 [group_id] => 1
 [groups] => Array
 (
 [1] => 1
 )
 
 )
 
 ==========================
 Queries:
 ------------------
 Array
 (
 
-  => SELECT extension, mime, content FROM cpg132_filetypes;
 [1] => SELECT * FROM cpg132_users WHERE user_id='1'AND user_active = 'YES' AND user_password != '' AND BINARY MD5(user_password) = 'a1e5b1ce13eb1c639dc27f9f511a7b95'
 [2] => SELECT MAX(group_quota) as disk_max, MIN(group_quota) as disk_min, MAX(can_rate_pictures) as can_rate_pictures, MAX(can_send_ecards) as can_send_ecards, MAX(upload_form_config) as ufc_max, MIN(upload_form_config) as ufc_min, MAX(custom_user_upload) as custom_user_upload, MAX(num_file_upload) as num_file_upload, MAX(num_URI_upload) as num_URI_upload, MAX(can_post_comments) as can_post_comments, MAX(can_upload_pictures) as can_upload_pictures, MAX(can_create_albums) as can_create_albums, MAX(has_admin_access) as has_admin_access, MIN(pub_upl_need_approval) as pub_upl_need_approval, MIN( priv_upl_need_approval) as  priv_upl_need_approval FROM cpg132_usergroups WHERE group_id in (1)
 [3] => SELECT group_name FROM  cpg132_usergroups WHERE group_id= 1
 [4] => DELETE FROM cpg132_banned WHERE expiry < 1119798378
 [5] => SELECT * FROM cpg132_banned WHERE ip_addr='192.168.2.63' OR ip_addr='192.168.2.63' OR user_id=1
 )
 
 ==========================
 GET :
 ------------------
 Array
 (
 [album] => 6
 [pid] => 38
 [pos] => 5
 )
 
 ==========================
 POST :
 ------------------
 Array
 (
 [sender_name] => mikey
 [sender_email] => alphaseven@patmedia.net
 [recipient_name] => mike
 [recipient_email] => alphaseven@patmedia.net
 [greetings] => again
 [message] => again
 )
 
 ==========================
 VERSION INFO :
 ------------------
 PHP version: 4.3.10 - OK
 ------------------
 mySQL version: 3.23.58
 ------------------
 Coppermine version: 1.3.2
 ==========================
 Module: gd
 ------------------
 GD Support enabled
 GD Version bundled (2.0.28 compatible)
 FreeType Support enabled
 FreeType Linkage with freetype
 GIF Read Support enabled
 GIF Create Support enabled
 JPG Support enabled
 PNG Support enabled
 WBMP Support enabled
 XBM Support enabled
 ==========================
 Module: mysql
 ------------------
 Active Persistent Links 0
 Active Links 1
 Client API version 3.23.58
 MYSQL_MODULE_TYPE external
 MYSQL_SOCKET /var/lib/mysql/mysql.sock
 MYSQL_INCLUDE -I/usr/include/mysql
 MYSQL_LIBS -L/usr/lib/mysql -lmysqlclient
 ==========================
 Module: zlib
 ------------------
 ZLib Support enabled
 Compiled Version 1.2.1.1
 Linked Version 1.2.1.2
 ==========================
 Server restrictions (safe mode)?
 ------------------
 Directive | Local Value | Master Value
 safe_mode | Off | Off
 safe_mode_exec_dir | no value | no value
 safe_mode_gid | Off | Off
 safe_mode_include_dir | no value | no value
 safe_mode_exec_dir | no value | no value
 sql.safe_mode | Off | Off
 disable_functions | no value | no value
 file_uploads | On | On
 include_path | .:/usr/share/pear | .:/usr/share/pear
 open_basedir | no value | no value
 ==========================
 email
 ------------------
 Directive | Local Value | Master Value
 sendmail_from | no value | no value
 sendmail_path | /usr/sbin/sendmail -t -i | /usr/sbin/sendmail -t -i
 SMTP | localhost | localhost
 smtp_port | 25 | 25
 ==========================
 Size and Time
 ------------------
 Directive | Local Value | Master Value
 max_execution_time | 30 | 30
 max_input_time | 60 | 60
 upload_max_filesize | 20M | 20M
 post_max_size | 20M | 20M
 ==========================
 Page generated in 0.384 seconds - 6 queries in 0.006 seconds - Album set :
 
 
 Thanks in advance . .  .
 
 alphaseven -
				It could be the sender email that's causing the problem.  Sometimes SMTP servers require the sender email address to match the one for the account.  Does the gallery administrator email match your account's email address?  Try changing it.