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Re: [Emailcore] Ticket #14: G.7.8. Review different size limits

Alessandro Vesely <vesely@tana.it> Fri, 16 July 2021 08:08 UTC

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From: Alessandro Vesely <vesely@tana.it>
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Date: Fri, 16 Jul 2021 10:08:15 +0200
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Subject: Re: [Emailcore] Ticket #14: G.7.8. Review different size limits
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On Fri 16/Jul/2021 00:19:21 +0200 John Levine wrote:
> It appears that Viktor Dukhovni  <emailcore@ietf.org> said:
>>> On 15 Jul 2021, at 4:16 pm, John Levine <johnl@taugh.com> wrote:
>>> 
>>> PS: I don't feel strongly about lifting the 1000 octet limit but I would like
>>> to understand how widely it's enforced by mail receivers.
>>
>>On the receiving side Postfix does not enforce any physical
>>line length limits on message body lines, ...
> 
> I realize qmail isn't very popular any more, although you will find
> it hiding in the guts of a lot of packaged mail systems.  For incoming
> messages, it's all dynamic and there's no length limits.  For outgoing
> messages it politely wraps headers to 80 bytes but leaves bodies alone.


Courier has similar limits on submission.  Some 100000 for the whole header 
(configurable since 2007, BOFHHEADERLIMIT) and 5000 bytes line length limit.


Best
Ale
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