I have a case where tens of thousands of spam & spoof emails jammed up my
Linux SMTP mail queue :
mailq | grep MAILER | wc -l ==> tens of thousands
This caused genuine emails (which is usually a couple hundreds only) to queue
up & not being processed because the it will take forever to scan from the top
to the end of the mailq with tens of thousands of emails.
However, I don't want to delete away those spam/spoof mails, just want to move
them to somewhere else (say another queue) so that I can review & in case there
are genuine ones, I'll redeliver them later.
I thought of:
mailq | grep -i mailer | awk '{print ($1)}' | grep -v "@" > listofsuspectmails.txt
for each queue id or mail entry id in listofsuspectmails.txt, I'll do a
postsuper -h entry_id
to hold the suspect email & after reviewing if I want to release, issue
postsuper -H entry_id
Question is :
Are the 'held' mails still something that will be scanned (& thus prolonged the
scan time) or scanning of mail queue will skip 'witheld' mails? If I have 100000
'witheld' emails & they're still being scanned, it will defeat this purpose of me
witholding the mails.
Currently we manually do a " postsuper -d entry_id " to delete away emails
(which can be automated with a Shell script but I don't want to automate
deletion as we may delete possibly genuine emails) after examining the emails
Any other solution are welcome
Thanks
U
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