Re: [Exim] SMTP error 552

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Author: Philip Hazel
Date:  
To: Sedat Yilmazer
CC: exim-users
Subject: Re: [Exim] SMTP error 552
On Wed, 14 Jun 2000, Sedat Yilmazer wrote:

> I have a Linux box which scans my mails with fetchmail. Recently I started to receive
>
> SMTP< 552 Header line is ridiculously overlong
>
> error messages. I have checked out the mails and found out that the sender is trying to send to a list just by adding them up at the to line, all at once (about 2000).
> I can receive the same mail via outlook express directly from the pop server, but if I fetch it and submit to my mailserver (Exim version 2.05) I get error. Is this an already corrected issue?


Older versions of Exim limited individual header lines to 8192
characters, and gave this error when the limit was exceeded. More recent
versions put a limit on the entire message header (I think the limit is
1Mb). *Some* limit is needed to prevent DOS attacks.


-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.