How large is the attachment ? By default CRM restricts attachments to 5 MB, though this can be changed. This setting affects toirign of incoming attachments, but may affect sending. Do you get the problem with any sized attachments ?
Outgoing email from CRM goes via SMTP. It is possible that attachements are being stripped either at the CRM server end, or the SMTP server. This may be done by the SMTP software, or possible anti-virus software
How large is the attachment ? By default CRM restricts attachments to 5 MB, though this can be changed. This setting affects toirign of incoming attachments, but may affect sending. Do you get the problem with any sized attachments ?
Outgoing email from CRM goes via SMTP. It is possible that attachements are being stripped either at the CRM server end, or the SMTP server. This may be done by the SMTP software, or possible anti-virus software