Hi everybody, I can't send larger e-mails from my .Mac desktop. Particularly mails with attachments above 20Kb, i.e. Excel, Word, PDF files. The error message is: 'This message could not be delivered and will remain in your outbox until it can be delivered. Sending this message content to the server failed.' Smaller e-mails with the same software attachments go through. I have already sorted out the following issues: 1. my ISP allows me to send e-mails with up to 10Mb 2. I can send the large files from my .Mac webmail account and other webmail accounts like hotmail to my .Mac desktop and open the attachments. 3. I can not send the same e-mails back. 4. My outgoing mail server is smtp.mac.com, server port 25, SSL. I understand I could use the outgoing server of my broadband provider (Telewest UK) but since I do not like their service, I'd rather not 5. I have checked my .Mac preferences and they look normal I have a iMacG5 2GHZ, use Tiger OSX 10.4.2., use .Mac mail 2.0.2, have a Netgear wirless router. Am a new Mac user since June and have paid for the .Mac package £40, so it is my first disappointing experience with Mac. So far I have been in seventh heaven with the whole set up. Maybe - I have set up .Mac incorrectly - it is a firewall problem - a router problem. Has anybody got an idea?