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It appears that the emails with attachments are not being sent. &nbsp;I have attached a bmp showing its progress and where the tracking has stopped. &nbsp;I would have thought I would be able to find the email in a queue somewhere, but it seems to have been deleted or I am looking in the wrong place - which is likely!<br />
<a href="https://filedb.experts-exchange.com/incoming/2008/02_w07/4589/Attachment-problem.bmp" target="_blank" class="file-inline" title="Screen shot of tracing an email (769 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>Attachment-problem.bmp</a>
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It appears that the emails with attachments are not being sent.  I have attached a bmp showing its progress and where the tracking has stopped.  I would have thought I would be able to find the email in a queue somewhere, but it seems to have been deleted or I am looking in the wrong place - which is likely!
Attachment-problem.bmp [https://filedb.experts-exchange.com/incoming/2008/02_w07/4589/Attachment-problem.bmp]

Attachment-problem.bmp

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Yes - there is nothing there
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We are unable to send some attachments with emails. &nbsp;Very small attachments e.g. 40b seem to be able to be sent without a problem. &nbsp;However some PDF files (e.g. 130kb) or some Word doc (e.g. 150kb) are not able to be sent. &nbsp;Some are sent and at other time some are not sent. &nbsp;We are not getting any undeliverable notices and nothing is stuck in a queue on the server.<br />
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We are using SBS 2003 R2
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We are unable to send some attachments with emails.  Very small attachments e.g. 40b seem to be able to be sent without a problem.  However some PDF files (e.g. 130kb) or some Word doc (e.g. 150kb) are not able to be sent.  Some are sent and at other time some are not sent.  We are not getting any undeliverable notices and nothing is stuck in a queue on the server.

We are using SBS 2003 R2

Attachments

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.

Email Servers

Small Business Server (SBS) is a line of server operating systems targeted at small businesses by bundling the operating system with a number of other Microsoft products that would normally need to be purchased or licensed separately. The most notable inclusions are Exchange, SQL Server, SharePoint and ISA/TMG (Microsoft's firewall and proxy server).

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.