Problem with automatically created Link in Mail

Hi,
after upgrading from Vibe 3.2 to Vibe 3.3 I have the following problem:
When I send a Blog Entry per Mail to some users, the automatically created Link in the Mail contains the Port 8080 after the url:
for example: https:vibe.mydomain.de:8080/...
Before upgrading to 3.3 everthing was allright: https:vibe.mydomain.de/...
Any ideas?

Kind regards,
Thomas