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Nobody can send emails with PDF attachments, pop3 server / outlook 2003

Users are getting the following error (0x800CCOF) Message Error, when they try to send emails with a pdf attachment, as far as I know this is for all users. When they send normal text emails there is no problem, but these emails with pdf attachments just stay in the outbox and block up the outlook. Can you help email is using a pop3 server, outlookk 2003 for the users.
Cheers
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keno_irl
Asked:
keno_irl
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1 Solution
 
ericnilsCommented:
There are two things I can think of to check.  The most likely culprit is the size of the attachment since POP3 servers can be configured with a maximum message size.  Try sending an email with a similarly sized non-PDF file.  If that doesn't get through then check your POP3 server configuration.  Note: the size of the message can be about 150% of the size of the attachment due to the way attachments are encoded in email.

If the message size is not the culprit you should check your Outlook configuration to ensure it isn't blocking "unsafe attachments."  The article below explains how to do this.  This is less likely to be the problem since you didn't mention any error messages.

Outlook 2003 unsafe attachments:
http://support.microsoft.com/kb/829982

If the above does not solve the problem then enable logging in Outlook to trace the error.  This article will guide you through enabling logging:
http://office.microsoft.com/en-us/outlook-help/what-is-the-enable-logging-troubleshooting-option-HA001174266.aspx
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keno_irlAuthor Commented:
Thanks for the reply, its not the size because the attachment i looked at is less than 1Mb
This has only started in the last week and its happening to every user giving this error
(0x800CCOF) Message Error
Going to try that unsafe attachments link, but it has only occured in the last week so Im not sure
Any other ideas ???
Cheers
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ericnilsCommented:
Did you try enabling logging to get a more detailed message?  Microsoft has an article referring to that error as a communications problem, but since you are only receiving it with attachments that seems unlikely.

http://support.microsoft.com/kb/813514
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priyaexchCommented:
Try turning off the antivirus services for one of the user and check if their outlook can send mail with PDF files.
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keno_irlAuthor Commented:
got it sorted, cheers for ur help
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