Duplicate posts (sometimes)

Well… not sure. Here’s the debug output (with xxxx for user/email info):

Starting mail fetch
Postie Version: 1.7.32
Wordpress Version: 4.5.3
PHP Version: 5.4.42
OS: Linux p3nlwpweb013.shr.prod.phx3.secureserver.net 2.6.32-604.30.3.lve1.3.63.el6.nfsfixes.x86_64 #1 SMP Mon Oct 26 11:56:49 MST 2015 x86_64
POSTIE_DEBUG: On
Time: 2016-08-19 15:06:23 GMT
Error log:
TMP dir: /home/content/p3nexnas06_data02/56/2144156/tmp/
Postie is in /home/content/p3nexnas06_data02/56/2144156/html/wp-content/plugins/postie/
Cron: On
Alternate Cron: Off
wp_content_path: /home/content/p3nexnas06_data02/56/2144156/html/wp-content
Connecting to pop.secureserver.net:110 (pop3)
message count: 1
Max emails (1)
There are 1 messages to process
memory at start of email processing:92619384
Array
(
[add_meta] => no
[admin_username] => xxxxxx
[allow_html_in_body] => 1
[allow_html_in_subject] => 1
[allow_subject_in_mail] => 1
[audiotemplate] => {FILENAME}
[audiotypes] => Array
(
[0] => m4a
[1] => mp3
[2] => ogg
[3] => wav
[4] => mpeg
)

[authorized_addresses] => Array
(
[0] => xxxxxx
[1] => xxxxxx
)

[banned_files_list] => Array
(
)

[confirmation_email] => sender
[convertnewline] => 0
[converturls] => 1
[custom_image_field] => 0
[default_post_category] => 5
[category_match] => 0
[default_post_tags] => Array
(
[0] => Photos,Wisdom Quest
)

[default_title] => Today’s Update
[delete_mail_after_processing] => 1
[drop_signature] => 1
[filternewlines] => 1
[forward_rejected_mail] => 1
[icon_set] => silver
[icon_size] => 32
[auto_gallery] => 1
[image_new_window] =>
[image_placeholder] => #img%#
[images_append] => 1
[imagetemplate] => <img src=”{MEDIUM}” alt=”{CAPTION}” width=”{MEDIUMWIDTH}” height=”{MEDIUMHEIGHT}” class=”alignnone size-medium wp-image-{ID}” />
[imagetemplates] => Array
(
[simple_link] => {FILENAME}
[no_wrappers] => <img src=”{THUMBNAIL}” alt=”{CAPTION}” title=”{CAPTION}” class=”attachment” />
[wordpress_default] => <img src=”{MEDIUM}” alt=”{CAPTION}” width=”{MEDIUMWIDTH}” height=”{MEDIUMHEIGHT}” class=”alignnone size-medium wp-image-{ID}” />
[thumbnail_left] => <div style=”float:left;margin-right:10px;”><img src=”{THUMBNAIL}” alt=”{CAPTION}” title=”{CAPTION}” class=”attachment” /></div>
[thumbnail_right] => <div style=”float:right;margin-left:10px;”><img src=”{THUMBNAIL}” alt=”{CAPTION}” title=”{CAPTION}” class=”attachment” /></div>
[robert_felty] => <div style=”margin-right:10px;background:black;color:white;padding:2px; width:{MEDIUMWIDTH};float:left”><img src=”{MEDIUM}” alt=”{CAPTION}” title=”{CAPTION}” class=”attachment” /><div style=”padding:.2em;text-align:left”>{CAPTION}</div></div>
[postie_legacy] => <div class=”postie-image-div”><img src=”{THUMBNAIL}” alt=”{FILENAME}” title=”{FILENAME}” style=”border:none” class=”postie-image” /></div>
[custom] =>
)

[input_protocol] => pop3
[interval] => hourly
[mail_server] => pop.secureserver.net
[mail_server_port] => 110
[mail_userid] => xxxxxxxxx
[maxemails] => 1
[message_start] => :start
[message_end] => :end
[message_encoding] => UTF-8
[message_dequote] => 1
[post_status] => draft
[prefer_text_type] => html
[return_to_sender] => 0
[role_access] => Array
(
)

[selected_audiotemplate] => simple_link
[selected_imagetemplate] => wordpress_default
[selected_video1template] => simple_link
[selected_video2template] => simple_link
[shortcode] =>
[sig_pattern_list] => Array
(
[0] => –\s?[\r\n]?
[1] => –\s
[2] => —
[3] => —
)

[smtp] => Array
(
)

[start_image_count_at_zero] => 0
[supported_file_types] => Array
(
[0] => application
)

[turn_authorization_off] => 0
[time_offset] => -7
[video1template] => {FILENAME}
[video1types] => Array
(
[0] => mp4
[1] => mpeg4
[2] => 3gp
[3] => 3gpp
[4] => 3gpp2
[5] => 3gp2
[6] => mov
[7] => mpeg
[8] => quicktime
)

[video2template] => {FILENAME}
[video2types] => Array
(
[0] => x-flv
)

[video1templates] => Array
(
[simple_link] => {FILENAME}
[small] => <object classid=”clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B” codebase=”http://www.apple.com/qtactivex/qtplugin.cab&#8221; width=”128″height=”96″>