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#1
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Using Thunderbird to send myself some files (an archive of sorts) but I
keep getting a message supposedly from GMail that it is having a problem and will not send. file.zip file.pdf so I renamed them but still it will not go. e.g file.z or file.piz |
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#2
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AMess wrote:
Using Thunderbird to send myself some files (an archive of sorts) but I keep getting a message supposedly from GMail that it is having a problem and will not send. file.zip file.pdf so I renamed them but still it will not go. e.g file.z or file.piz You want to be absolutely sure what the "having a problem" actually is, before dealing with it. It probably isn't the size of the attachment. "Gmail Increases File Attachment Size Limit to 50MB" https://www.pcmag.com/news/352131/gm...-limit-to-50mb Google may be trying to prevent the transmission of EXE content, which could potentially have malware. That's the only excuse for blocking ZIP files I can think of. And that would also depend on them receiving and analyzing the file, to decide it should be rejected. That doesn't seem likely. A PDF should not be a problem, in terms of malware. A PDF can contain a Javascript exploit, but as long as you turn of Javascript in the Adobe Reader preferences, that shouldn't hurt anything. ******* Now, this is a novel explanation. http://ccm.net/forum/affich-76425-i-...files-in-gmail "You want to know what worked for me? I shrunk down my browser window (which was firefox by the way) and there it was, gmails attach file window open and waiting for me to pick a file on my hard drive for it. How on earth it wound up behind my browser window " But that's not Thunderbird. In your case, you're attempting to upload an attachment via IMAP. Which isn't quite the same thing. There should be a difference between pop-up blocking for HTML code, versus Thunderbird making a dialog box for attachments to work properly. ******* The only other thing I can think of, is a "black hole routing" problem. That's where a short text message makes it to an email server, but large attachments deadlock. Normally, the email tool cannot even throw up an error, unless the email tool uses a timer to detect a TCP deadlock. One of the ingredients there, would be if you tried to "ping" the IP address of the server you're sending to, ping is rejected and doesn't work (none of the launched ping packets come back). The more modern Windows may also have some protection in protocol, for detecting black hole routing problems. Changing the MTU on your router can also be used to fix the problem with the particular email server. That's what the tech support at my ISP tried to tell me, that it was "all my fault" their email didn't work :-\ Blame shifting bozos. You could potentially detect a black hole problem, using Wireshark, and noticing that only 1K worth of uploads for the attachment happened, before it seemed to stop dead. Since you're probably using SSL or TLS for the transmission, it's going to be harder to draw such a conclusion for modern protocols. It'll still stop dead, but you'll have a harder time deciding what was in the packets. OK, so your next experiment, is to make a 512 byte attachment, and try and upload that :-) See if there is a size dependency. See what size triggers it. Paul |
#3
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AMess,
so I renamed them but still it will not go. There are scanning programs will ignore the files extension and try to determine the type of file by way of the *contents* of the file. The files you mention start with a rather recognisable pattern (the so-called file ID). Have you already tried to attach a simple text document and/or an image ? And last-but-not-least: When you get an actual error message than please mention its exact contents. Such messages mostly contain a pointer to the cause of the failure. Regards, Rudy Wieser |
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