For signed or encrypted mails use my public key and ensure with the information attached the key integrity:

Key-ID:	0xFE7C4B0A
Type:	DSA
Length:	1024
Created:	2007-11-04
Fingerprint:	3820 3105 4AC6 5D4A F9E9 CCA3 733D E257 FE7C 4B0A