Qmail Duplicate mail issue


New Email
We are using qmail server in our organization. we are using this server since 4 years. we are facing duplicate mail issue. getting more than 25 duplicate mails for each mail. Please help me out with this issue.


EQ Forum Admin
Staff member
Is this related to email that the server is sending or receiving?

What do the mail logs say?

Is there a process that is timing out such as anti-virus or spam filtering that's taking so long to complete that remote mail servers timeout and resend even though you might have eventually delivered the original message?

Less likely, any recent network changes that might be affecting tcp/ip, or general network issues near the server? Have you checked for a bad network & packet loss?


New Email
Server sending duplicate mails to the recipient mail id also there is no any changes in our network. logs details are following...

/service/clamd: up (pid 3894) 56847 seconds
/service/dovecot: up (pid 3897) 56847 seconds
/service/freshclam: up (pid 3882) 56848 seconds
/service/maildrop-logger: up (pid 3885) 56848 seconds
/service/qmail-pop3d: up (pid 14656) 19 seconds
/service/qmail-send: up (pid 14630) 19 seconds
/service/qmail-smtpd: up (pid 14637) 19 seconds
/service/qmail-smtpd-ssl: up (pid 14646) 19 seconds
/service/qmail-updater: up (pid 3890) 56848 seconds
/service/spamd: up (pid 3892) 56847 seconds
/service/clamd/log: up (pid 3896) 56847 seconds
/service/dovecot/log: up (pid 3899) 56847 seconds
/service/freshclam/log: up (pid 3883) 56848 seconds
/service/maildrop-logger/log: up (pid 3887) 56848 seconds
/service/qmail-pop3d/log: up (pid 14655) 19 seconds
/service/qmail-send/log: up (pid 14631) 19 seconds
/service/qmail-smtpd/log: up (pid 14643) 19 seconds
/service/qmail-smtpd-ssl/log: up (pid 14652) 19 seconds
/service/qmail-updater/log: up (pid 3891) 56847 seconds
/service/spamd/log: up (pid 3900) 56847 seconds

Few times i have restart the qmailctl service


EQ Forum Admin
Staff member
Check your qmail send logs.

What do the logs say regarding the outgoing emails to the recipient getting the duplicates?

Are there any errors related to that recipients mail server?

Are ALL emails being duplicated for all recipients?

Are they regular emails? Do they have large attachments?