SMTP Error (451): Failed to add recipient "theemail@gmail.com" (4.3.0 <office@superweb.bg>: Temporary lookup failure).

sudo apt-get purge sendmail
sudo apt-get install --reinstall postfix
sudo /etc/init.d/postfix restart

Oct  5 18:13:58 mail postfix/cleanup[3300]: warning: B8CB3A22AD7: sender_bcc_maps map lookup problem -- message not accepted, try again later
Oct  5 18:13:58 mail postfix/pickup[3297]: warning: maildrop/BAEC8A22ACD: error writing B8CB3A22AD7: queue file write error
Oct  5 18:14:41 mail postfix/smtpd[3318]: error: unsupported dictionary type: pcre
Oct  5 18:14:42 mail postfix/smtpd[3318]: connect from smtp-out.abv.bg[194.153.145.80]
Oct  5 18:14:42 mail postfix/proxymap[3303]: warning: mysql:/etc/postfix/mysql/virtual_mailbox_domains.cf is unavailable. unsupported dictionary type: mysql
Oct  5 18:14:42 mail postfix/trivial-rewrite[3301]: warning: proxy:mysql:/etc/postfix/mysql/virtual_mailbox_domains.cf: table lookup problem
Oct  5 18:14:42 mail postfix/trivial-rewrite[3301]: warning: virtual_mailbox_domains lookup failure
Oct  5 18:14:42 mail postfix/trivial-rewrite[3301]: warning: proxy:mysql:/etc/postfix/mysql/virtual_mailbox_domains.cf: table lookup problem
Oct  5 18:14:42 mail postfix/trivial-rewrite[3301]: warning: virtual_mailbox_domains lookup failure
Oct  5 18:14:42 mail postfix/smtpd[3318]: warning: pcre:/etc/postfix/helo_access.pcre is unavailable. unsupported dictionary type: pcre
Oct  5 18:14:42 mail postfix/smtpd[3318]: warning: pcre:/etc/postfix/helo_access.pcre: table lookup problem
Oct  5 18:14:42 mail postfix/smtpd[3318]: NOQUEUE: reject: RCPT from smtp-out.abv.bg[194.153.145.80]: 451 4.3.5 <smtp-out.abv.bg>: Helo command rejected: Server configuration error;$
Oct  5 18:14:42 mail postfix/smtpd[3318]: disconnect from smtp-out.abv.bg[194.153.145.80]
Oct  5 18:14:58 mail postfix/pickup[3297]: B1974A22AD7: uid=0 from=<root>
Oct  5 18:14:42 mail postfix/proxymap[3303]: warning: mysql:/etc/postfix/mysql/virtual_mailbox_domains.cf is unavailable. unsupported dictionary type: mysql
Oct  5 18:14:58 mail postfix/proxymap[3303]: warning: mysql:/etc/postfix/mysql/sender_bcc_maps_user.cf is unavailable. unsupported dictionary type: mysql
Oct  5 18:14:58 mail postfix/cleanup[3300]: warning: proxy:mysql:/etc/postfix/mysql/sender_bcc_maps_user.cf lookup error for "root@mail.vivashost.com"
Oct  5 18:14:58 mail postfix/cleanup[3300]: warning: B1974A22AD7: sender_bcc_maps map lookup problem -- message not accepted, try again later
Oct  5 18:14:58 mail postfix/pickup[3297]: warning: maildrop/BAEC8A22ACD: error writing B1974A22AD7: queue file write error
Oct  5 18:15:58 mail postfix/pickup[3297]: C0A32A22AD7: uid=0 from=<root>
Oct  5 18:15:58 mail postfix/cleanup[3300]: warning: proxy:mysql:/etc/postfix/mysql/sender_bcc_maps_user.cf lookup error for "root@mail.vivashost.com"
Oct  5 18:15:58 mail postfix/cleanup[3300]: warning: C0A32A22AD7: sender_bcc_maps map lookup problem -- message not accepted, try again later
Oct  5 18:15:58 mail postfix/pickup[3297]: warning: maildrop/BAEC8A22ACD: error writing C0A32A22AD7: queue file write error
Oct  5 18:16:27 mail postfix/smtpd[3395]: error: unsupported dictionary type: pcre
Oct  5 18:16:27 mail postfix/smtpd[3395]: connect from localhost[127.0.0.1]
Oct  5 18:15:58 mail postfix/proxymap[3303]: warning: mysql:/etc/postfix/mysql/sender_bcc_maps_user.cf is unavailable. unsupported dictionary type: mysql
Oct  5 18:16:27 mail postfix/proxymap[3303]: warning: mysql:/etc/postfix/mysql/virtual_mailbox_domains.cf is unavailable. unsupported dictionary type: mysql
Oct  5 18:16:27 mail postfix/trivial-rewrite[3301]: warning: proxy:mysql:/etc/postfix/mysql/virtual_mailbox_domains.cf: table lookup problem
Oct  5 18:16:27 mail postfix/trivial-rewrite[3301]: warning: virtual_mailbox_domains lookup failure
Oct  5 18:16:27 mail postfix/trivial-rewrite[3301]: warning: proxy:mysql:/etc/postfix/mysql/virtual_mailbox_domains.cf: table lookup problem
Oct  5 18:16:27 mail postfix/trivial-rewrite[3301]: warning: virtual_mailbox_domains lookup failure
Oct  5 18:16:27 mail postfix/smtpd[3395]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 451 4.3.0 <office@superweb.bg>: Temporary lookup failure; from=<office@superweb.bg> to=<th$
Oct  5 18:16:27 mail roundcube: <65kuug0v> SMTP Error: Failed to add recipient 'thelex@abv.bg'. 4.3.0 <office@superweb.bg>: Temporary lookup failure (Code: 451) in /opt/www/roundcub$
Oct  5 18:16:27 mail postfix/smtpd[3395]: disconnect from localhost[127.0.0.1]
Oct  5 18:16:58 mail postfix/pickup[3297]: 508F3A22AD9: uid=0 from=<root>
Oct  5 18:16:27 mail postfix/proxymap[3303]: warning: mysql:/etc/postfix/mysql/virtual_mailbox_domains.cf is unavailable. unsupported dictionary type: mysql
Oct  5 18:16:58 mail postfix/proxymap[3303]: warning: mysql:/etc/postfix/mysql/sender_bcc_maps_user.cf is unavailable. unsupported dictionary type: mysql
Oct  5 18:16:58 mail postfix/cleanup[3300]: warning: proxy:mysql:/etc/postfix/mysql/sender_bcc_maps_user.cf lookup error for "root@mail.vivashost.com"
Oct  5 18:16:58 mail postfix/cleanup[3300]: warning: 508F3A22AD9: sender_bcc_maps map lookup problem -- message not accepted, try again later
Oct  5 18:16:58 mail postfix/pickup[3297]: warning: maildrop/BAEC8A22ACD: error writing 508F3A22AD9: queue file write error