On Sat, 31 Jan 1998, F. Jacot Guillarmod wrote:
> We're trying to standardise on the format of local email addresses for
> students, and have decided on the format "studentno@???".
Aarrgghh!! Don't you know that vast amounts of spam has digit-only local
parts, and many sites are not blocking such mail?
> Fortunately, the student number is prefixed by a unique character
Phew!
> according to which campus they are registered on, so I thought the
> following two directors would handle things:
>
> ====================
> [...]
>
> east-london:
> driver = smartuser
> domain = "campus.ru.ac.za"
> prefix = "e9:e0"
> new_address = ${local_part}@???
>
> grahamstown:
> driver = smartuser
> domain = "campus.ru.ac.za"
> prefix = "g7:g8:g9:g0"
> new_address = ${local_part}@???
>
> [...]
> ====================
>
> My problem is that it's not clear from the documentation what the effect
> of "prefix" is. Is that character string, if it exists, stripped from
> the local_part as used in new_address? If so, is there an obvious method
> of re-routing according to a component of local_part?
Yes, it is stripped, but it is available in $local_part_prefix. So what
you need is
new_address = ${local_part_prefix}${local_part}@....
An alternative, or course, is not to use prefix, but instead use
local_parts = ^e[09] and
local_parts = ^g[7890]
respectively.
--
Philip Hazel University Computing Service,
ph10@??? New Museums Site, Cambridge CB2 3QG,
P.Hazel@??? England. Phone: +44 1223 334714
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