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improve postfix error messages?

Sven L.

Regular Pleskian
hello,

postfix usually works "ok" when it comes to error messages.

but there seem to be a few not standard responses.

like this:

Transcript of session follows.

Code:
 Out: 220 <hostname> ESMTP Postfix (Ubuntu)
 In:  EHLO <sending host>
 Out: 250-<hostname>
 Out: 250-PIPELINING
 Out: 250-SIZE 18874368
 Out: 250-VRFY
 Out: 250-ETRN
 Out: 250-STARTTLS
 Out: 250-AUTH DIGEST-MD5 LOGIN CRAM-MD5 PLAIN
 Out: 250-ENHANCEDSTATUSCODES
 Out: 250-8BITMIME
 Out: 250 DSN
 In:  MAIL FROM:<sender> SIZE=2767
 Out: 250 2.1.0 Ok
 In:  RCPT TO:<recipient>
 Out: 250 2.1.5 Ok
 In:  DATA
 Out: 354 End data with <CR><LF>.<CR><LF>
 Out: 451 4.3.0 Error: queue file write error

Session aborted, reason: lost connection

so, you see this email is over 18MB, which in my opinion is like sending an elephant with fedex. my server has a limit of 15MB

now, it seems that my postfix is not telling the sender server that the email is not being accepted due a quota or limite related issue. it's just telling the sender server that 451 4.3.0 Error: queue file write error
thus, the sender server keeps sending the same email over and over and over, flooding my postmaster email with stupid errors and increasing server load for absolutely NOTHING

how can this be fixed (and don't tell me to increse the MB limit)?
 
Last edited:
Hello IgorG

but the mailbox is not really full. it's just the server that doesn't allow so big messages. which would be the apporpiate error code for that?

oh and, this would work for 11.x is there a way to do the same on 9.x?
 
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