postfix says unknown user

[splyffen]

i have searched the site for information about this.

i have a problem with a newly created website, whenever i send an email to the user i get it back with the comment:

info@juliexxxxxxx.tld
#< #5.1.1 X-Postfix; unknown user: "web41_julie"> #SMTP#

this is the bottom of my /etc/postfix/vitusertable

WEB41_juliexxxxxxx.tld@www.juliexxxxxxx.tld WEB41_juliexxxxxxx.tld
webmaster@juliexxxxxxx.tld WEB41_juliexxxxxxx.tld
WEB41_juliexxxxxxx.tld@juliexxxxxxx.tld WEB41_juliexxxxxxx.tld
info@www.juliexxxxxxx.tld WEB41_julie
WEB41_julie@www.juliexxxxxxx.tld WEB41_julie
info@juliexxxxxxx.tld WEB41_julie
WEB41_julie@juliexxxxxxx.tld WEB41_julie


every other domain works like a charm but this doesn't please help.

[till]

The problem is that you use a uppercase user prefix. This will not work for postfix. The prefix must be lowercase at it is by default. Please chenge the prefix back to the default and then delete the user and create it again.

[splyffen]

thank you, now it works again.