New user registration: verification e-mail doesn't sent by

[al.al.osipov@…]

I'm using TracAccountManager-0.4.4 on my fresh installation of trac-1.0.10. Account manager is configured in according to official cookbook: CookBook/AccountManagerPluginConfiguration.

After new user registration and first attempt to login, new user doesn't receive verification e-mail; the snippet of trac-log file pasted below (attempt to register 'tester' user):

2016-04-11 12:51:05,933 Trac[loader] DEBUG: Loading acct_mgr.notification from /apps/trac/lib/python2.7/site-packages/TracAccountManager-0.4.4-py2.7.egg
2016-04-11 12:51:06,169 Trac[notification] INFO: Sending notification through SMTP at localhost:25 to [u'tracadmin@myhost']
2016-04-11 12:52:21,638 Trac[notification] INFO: Email address w/o domain: tester
2016-04-11 12:52:21,638 Trac[notification] INFO: no recipient for a ticket notification

Mention here, that system trying to send e-mail to 'tester', however during registration I've provided correct e-mail.

Another e-mail notifications (ticket creation, and even new account creation notify, see snippet above) works correct.