Варианты решения Ваших вопросов

Здравствуйте. настройте ваш почтовый клиент на минимальный интервал проверки почты ка кминимум больше * минут. не стоит каждые несколько секунд проверять почту, от этого она быстрее не прийдет, а файрвол занесет ваш ip в блок. Настройте корректно ваш почтовый клиент
Jun ** **:**:** duna lfd[******]: pop*d - ** logins in **** secs from IP (MD/Moldova, Republic of/***-***-**-***.starnet.md) for EMAIL exceeds **/hour - *Blocked in csf* for * secs [LT_POP*D]
Jun ** **:**:** duna lfd[******]: Incoming IP IP:*** temporary block removed
Jun ** **:**:** duna lfd[******]: Incoming IP IP:*** temporary block removed
Jun ** **:**:** duna lfd[******]: pop*d - ** logins in **** secs from IP (MD/Moldova, Republic of/***-***-**-***.starnet.md) for EMAIL exceeds **/hour - *Blocked in csf* for *** secs [LT_POP*D]
Jun ** **:**:** duna lfd[******]: Incoming IP IP:*** temporary block removed
Jun ** **:**:** duna lfd[******]: Incoming IP IP:*** temporary block removed
Jun ** **:**:** duna lfd[******]: pop*d - ** logins in **** secs from IP (MD/Moldova, Republic of/***-***-**-***.starnet.md) for EMAIL exceeds **/hour - *Blocked in csf* for *** secs [LT_POP*D]
Jun ** **:**:** duna lfd[******]: Incoming IP IP:*** temporary block removed
Jun ** **:**:** duna lfd[******]: Incoming IP IP:*** temporary block removed
Jun ** **:**:** duna lfd[*******]: pop*d - ** logins in **** secs from IP (MD/Moldova, Republic of/***-***-**-***.starnet.md) for EMAIL exceeds **/hour - *Blocked in csf* for *** secs [LT_POP*D]
Jun ** **:**:** duna lfd[*******]: Incoming IP IP:*** temporary block removed
Jun ** **:**:** duna lfd[*******]: Incoming IP IP:*** temporary block removed
Jun ** **:**:** duna lfd[******]: pop*d - ** logins in **** secs from IP (MD/Moldova, Republic of/***-***-**-***.starnet.md) for EMAIL exceeds **/hour - *Blocked in csf* for *** secs [LT_POP*D]
Jun ** **:**:** duna lfd[******]: Incoming IP IP:*** temporary block removed
Jun ** **:**:** duna lfd[******]: Incoming IP IP:*** temporary block removed
Jun ** **:**:** duna lfd[******]: (PERMBLOCK) IP (MD/Moldova, Republic of/***-***-**-***.starnet.md) has had more than * temp blocks in the last ***** secs - *Blocked in csf* [LT_POP*D]