Limiting Mail Bandwidth

[Pagemakers]

Is there anyway I can limit the bandwidth a domain can use for outgoing mail?

 

[abdi]

You can't! But you can limit the number of emails an account can send out per hour ...

 

[Pagemakers]

Thanks for the very fast response. How can I do that?

 

[abdi]

vim /etc/postfix/main.cf

and change (or add) to the following

anvil_rate_time_unit = 3600
smtpd_client_message_rate_limit = 100

anvil_rate_time_unit is the time in seconds
smtpd_client_message_rate_limit is the SMTP rate (mails per the above time)

Don't forget to restart postfix after that change with!

/etc/init.d/postfix restart

 

[Pagemakers]

Sorry. I forgot to say we use Qmail

 

[abdi]

There's some sort of throttle patch available for Qmail that fits your description (http://www.qmailwiki.org/Throttle). I doubt there's built in functionality without patching Qmail, as Qmail is, ahem, perfectly coded as is.

Please take a look at this discussion of various MTAs (http://shearer.org/MTA_Comparison), particularly the note about Qmail. Bear in mind that this discussion is from 6 years ago, and what was said about Qmail then is even more true. This would perhaps not be in your short or medium term planning, but migrating from Qmail should be something to consider, particularly if you have to apply a bunch of sort of random patches to get it to do what you want it to do.

 

[Pagemakers]

Thanks again. My only concern was if I change to postfix won’t I have to modify every script on our server that uses sendmail to now use postfix?

 

[abdi]

Nope, you won't have to! (and plesk makes it very easy for you to switch between the 2 MTAs)

 

[Pagemakers]

OK…Swapping now. It’s just a button click. Let’s see what happens!

 

[Pagemakers]

OK swap complete but now my mail app (apple mail) keeps asking for the mail account password….

 

[abdi]

Please rebuild your mailboxes with

/usr/local/psa/admin/sbin/mchk --with-spam

That should stop all the password requests you are seeing ...

 

[Pagemakers]

Still getting the password prompts…(we use 4PSA’s spam guardian if that makes any difference)

==> Checking for: mailsrv_conf_init... ok
==> Checking for: mail_handlers_init... ok
==> Checking for: mailsrv_entities_dump... ok
==> Checking for: mail_admin_aliases... ok
==> Checking for: mail_auth_dump... fail
==> Checking for: mailman_lists_dump... ok
==> Checking for: mail_kav8_restore... ok
==> Checking for: mail_responder_restore... ok
==> Checking for: mail_postfix_transport_restore... ok
==> Checking for: mail_spam_restore... fail
==> Checking for: mail_grey_restore... ok
==> Checking for: mail_mailbox_restore... ok
==> Checking for: mail_spf_restore... ok
==> Checking for: mail_dk_restore... ok
==> Checking for: mail_drweb_restore... not exists
Errors occured in mail restore procedure
Some utilities have exited with errors:
/usr/lib64/plesk-9.0/mail_auth_dump
/usr/lib64/plesk-9.0/mail_spam_restore

 

[abdi]

That's always been my nightmare with plesk ...(UN-predictable)

Unfortunately you will have to reset the email passwords from the control panel ...(if the mailbox repair has not solved it, sorry for the inconveniences)

 

[Pagemakers]

No worries. I updated the email password via Plesk and that still didn’t resolve the issue. Returning to Qmail

 

[abdi]

Returning to Qmail

Alright! (Perhaps later with the least traffic you can switch to postfix and check the error logs the cause, am sure it's something small and easily solvable). Truth is postfix has way to many advantages over qmail ..

 

[Pagemakers]

I’ve re-installed postfix to so if I can find out the problem.

Could it be that prior to upgrading I had this option enabled? "Use of short (webmaster) and full ([email protected]) POP3/IMAP mail account names is allowed”

If so can it be enabled on postfix?

 

[abdi]

Postfix uses FULL email addresses and not short account names ...(So you need to disable the short bit for it to work!)

 

[Pagemakers]

Done and now working! Thank you for your help.

 

[abdi]

Your most welcome ...have a good afternoon!

 

[IgorG]

Protection from outgoing spam by limiting outgoing mail feature has been implemented in Plesk 12.0 Preview. More details in Release Notes