A.P. Lawrence

Best of CUSM: maximum length of email address

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From: Jean-Pierre Radley <jpr@jpr.com>
Subject: Re: max.length of email address??
Date: Wed, 25 Apr 2001 22:23:12 GMT References: <3ae6d8bf.409677667@news.kiva.net> <20010425120147.A19489@jpradley.jpr.com> <3ae70613.421276657@news.kiva.net> <3ae70eda.423524007@news.kiva.net> <9c7gnm$avl$1@hobbes.caldera.com>

John DuBois propounded (on Wed, Apr 25, 2001 at 09:48:38PM +0000):
| 
| In article <3ae70eda.423524007@news.kiva.net>,
| Nathan Kahn <nathan@theatrefx.com> wrote:
| +If anybody here knows if there really is a maximum, and what that
| +maximum might be, that's be interesting to know . . . 
| 
| Implementations will vary, but RFC821 says:
| 
|       The maximum total length of a user name is 64 characters.
|       The maximum total length of a domain name or number is 64 characters.

In the last few days, RFC2821 & RFC2822 were just released, superseding
RFC821 & RFC822.  There's a slight change to what you just wrote:

   local-part
      The maximum total length of a user name or other local-part is 64
      characters.

   domain
      The maximum total length of a domain name or number is 255
      characters.

Unix and Linux Support

-- 
JP

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