Hi Folks, finally I managed to run a receiving sendmail with a dyndns-Domain (using defaults and webmin helps fine *g-*) No my prob: The last german LAN-Line contained a mailserver-test-suite, which i ran. While running the tests the suite sends tons of mails and my mailbox has been overflown (about 49 megs!). Fetching mails of the tested account wasn't possible anymore Server-answer: Unable to copy mail spool file to temp dropbox /var/mail/.gschiffer.pop: No space left on device (28) I killed all the files which are connencted with the account and touched /var/spool/mail/gschiffer. It works again samba:/var/spool/mail # df -h /var/ Filesystem Size Used Avail Use% Mounted on /dev/hdc2 164M 78M 86M 48% /var samba:/var/spool/mail # Has anyone of you an idea about the default mailbox-size and how I can fix to e.g. 10 megs and how I can prevent mailbombing on certain accounts? Thx for tipps CU Guido