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) In: EHLO [IP ADDRESS] Out: 250-****.tld Out: 250-PIPELINING Out: 250-SIZE 26214400 Out: 250-VRFY Out: 250-ETRN Out: 250-AUTH PLAIN LOGIN Out: 250-ENHANCEDSTATUSCODES Out: 250-8BITMIME Out: 250 DSN In: AUTH PLAIN SOME_LONG_CODE Out: 235 2.7.0 Authentication successful In: MAIL FROM:<xxx@***.tld> Out: 250 2.1.0 Ok In: RCPT TO:<email@example.com> 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?