$remailer{"grotto"} = "<mix@grotto.thenorthinn.com> mix middle remix inflt50 rhop5 reord klen1024";

Here is the Mixmaster key:
Use only one mixmaster key per remailer unless your client can handle multiple.
A key length of '258' in this file means 1024-bit RSA as y=(x-2)*4.
1024-bits offers inferior security to the larger keys that require at least version 3.0.2.
http://www.zen19351.zen.co.uk/mixmaster303/

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grotto mix@grotto.thenorthinn.com 71a52385dc3099e99176097981075a1d 2:3.1 MC 2022-03-04 2022-04-15

-----Begin Mix Key-----
71a52385dc3099e99176097981075a1d
1026
ABC6LOR0nhzZZXy0uObOS06ZbXJ+e4nxP4Z/wDyq
fR8Ql3mWaqN8Hl73JKqjsJhwRoayubfTdrUA7prf
YPlpYb1d3Igjl56xi6ilnqWfXoSNASxbmspk1sSb
J2vnVgxzwZpMQFA/a79aan2Oui6iw/hnEVW4Rxwy
BDTExa5r0tk2GoMdpErNHCoew/3qm5VYySApq//2
3hRAicKsBfHEjCHKwlZJsWL29Dd60BaE8gl2/7lq
VdHJh8FErnowGOXgdsO/cs6u5TVxijKuh8YPZUaP
LZlZdd5O4eNWSPzBRoI+S4DgJ9HrPPbruuZTzyVH
fgZzERb/IAQcK9D4p1adn8X/lZenSADXn65ZJjRr
ACnNZDm8ooBtNHiWhXJL49Lzk3ngphQqLT1zD6Jg
DOJ8/1kJble39Nh14rjewMwf7ahrQgiEVMrenN+0
/WDHbbN3KU+nK3RbgAEHgwnVQ344qYrvcneUM+08
Wxqsza6ydEti9GB7zSPvoh2wtdlyN7FhXcKON//K
sj4kG3EHcMa8oxrc8DgUBEi+IXgHZo+CFNULQEG7
u9KEKMsxEQsaUX84sUp8am+Q9hAJsZjDC7IWk2E8
rFt8+vb1Y2KdqtK20DwsxTZPLcK0O8gOZiMLW15b
7VnSVzLlZl72KwqcxvSvwSMlmRk8XfCg4x79V9xm
9dntywAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAQAB
-----End Mix Key-----