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This might sound weird, but the thing is, that I cannot send emails from my smartphone even though it works from my desktop email client. I double-checked that the smtp settings are correct.

This is the status log I am getting as error messages:

Transcript of session follows.

 Out: 220 ****.tld ESMTP Postfix (Debian/GNU)
 Out: 250-****.tld
 Out: 250-SIZE 26214400
 Out: 250-VRFY
 Out: 250-ETRN
 Out: 250-8BITMIME
 Out: 250 DSN
 Out: 235 2.7.0 Authentication successful
 In:  MAIL FROM:<xxx@***.tld>
 Out: 250 2.1.0 Ok
 In:  RCPT TO:<a@b.tld>
 Out: 451 4.3.0 Error: queue file write error
 In:  QUIT
 Out: 221 2.0.0 Bye

What is this? Authentication seems to work fine, and I am not sending attachments. (That is mainly what I get when I google that error, that attachments are too big). As I said: It works from thunderbird but doesn't from my smartphone. (Android with K-9 Mail).

What could be the problem here?

share|improve this question
Have you tried sending emails with another email client from your smartphone? Trying to see if this is a bug in the way K-9 is handling the message or not. – n0pe Dec 13 '11 at 21:28
I am pretty sure it is not. I have never had problems with K-9 and this just doesn't feel like it's a bug of the software. If I cannot solve it soon, I will of course need to dig into that as well, but it used to work before (though I can't remember anymore what I changed...). – janoliver Dec 13 '11 at 21:37
From what I gather, that message usually only shows up when something to do with space/size is an issue. Is your data plan all used up (assuming you're on 3G)? – n0pe Dec 13 '11 at 21:49

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