[Mailman-Users] Email Address getting Deleted

[ajay babu]

 Hi Team,

Need your kind help.

When ever i add an email-id to mailing list, the email-id is getting
deleted on its own in mailman and the below logs were captured in bounce &
subscribe log files:

May 11 00:59:27 2018 (11937) it-support: new abc at xxx.com <sunil.em at tivo.com>,
admin mass sub

May 11 20:00:51 2018 (27739) it-support: *deleted *abc at xxx.com*; disabled
address*

May 11 20:00:51 2018 (27739) it-support: abc at xxx.com
<sunil.em at tivo.com> auto-unsubscribed
[reason: BYBOUNCE]

May 11 20:00:51 2018 (27739) it-support: abc at xxx.com <sunil.em at tivo.com> bounce
score: 1.0

May 11 20:00:51 2018 (27739) it-support: *abc at xxx.com
<sunil.em at tivo.com> disabling due to bounce score 1.0 >= 1.0*
May 11 20:00:51 2018 (27739) it-support: *abc at xxx.com
<sunil.em at tivo.com> deleted after exhausting notices*

Could you help me to understand what might be the reason for this issue? if
you're not the right point of contact, can you share me the correct details
to whom i can contact in this regards?

Thanks in Advance.

~Regards
AJ