Cisco Cisco Email Security Appliance X1050 Guía Del Usuario
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Cisco AsyncOS 8.0.1 for Email User Guide
Chapter 17 Email Authentication
Configuring DomainKeys and DKIM Signing
To avoid this scenario, it is recommended that you use double quotes to break up the multi-string DNS
text record into smaller strings not exceeding 255 bytes. The following is an example.
text record into smaller strings not exceeding 255 bytes. The following is an example.
s._domainkey.domain.com. IN TXT "v=DKIM1;"
"p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQE"
"A4Vbhjq2n/3DbEk6EHdeVXlIXFT7OEl81amoZLbvwMX+bej"
"CdxcsFV3uS7G8oOJSWBP0z++nTQmy9ZDWfaiopU6k7tzoi"
"+oRDlKkhCQrM4oP2B2F5sTDkYwPY3Pen2jgC2OgbPnbo3o"
"m3c1wMWgSoZxoZUE4ly5kPuK9fTtpeJHNiZAqkFICiev4yrkL"
"R+SmFsJn9MYH5+lchyZ74BVm+16Xq2mptWXEwpiwOxWI"
"YHXsZo2zRjedrQ45vmgb8xUx5ioYY9/yBLHudGc+GUKTj1i4"
"mQg48yCD/HVNfsSRXaPinliEkypH9cSnvgvWuIYUQz0dHU;"
DKIM implementations reassemble DNS text records broken down this way into the full original single
string before processing them.
string before processing them.
Testing Domain Profiles
Once you have created a signing key, associated it with a domain profile, and generated and inserted the
DNS text into your authorized DNS, you can test your domain profile.
DNS text into your authorized DNS, you can test your domain profile.
Procedure
Step 1
Choose Mail Policies > Signing Profiles.
Step 2
In the Domain Signing Profiles section, in the Test Profile column, click the Test link for the domain
profile.
profile.
Step 3
A message is displayed at the top of the page, indicating success or failure. If the test fails, a warning
message is displayed, including the error text.
message is displayed, including the error text.
Exporting Domain Profiles
All domain profiles on the appliance are exported together in a single text file.
Procedure
Step 1
Choose Mail Policies > Signing Profiles.
Step 2
Click Export Domain Profiles.
Step 3
Enter a name for the file and click Submit.
Importing Domain Profiles
Procedure
Step 1
Choose Mail Policies > Signing Profiles.
Step 2
Click Import Domain Profiles.