Send mail to distribution list but not enough members

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cuong.phan1
Posts: 2
Joined: Sun Nov 28, 2021 4:57 pm

Send mail to distribution list but not enough members

Post by cuong.phan1 »

Hello everyone,

I have a problem with sending emails to a distribution list of 1620 people.

Many times I received feedback from users that they did not receive any emails from me. Although I sent them by email to distribution list.

I checked the list of members in that distribution list, obviously they are on the list.

Next I checked to zimbra.log. And use wc -l to count. It was a surprise when the Distribution list was missing members from the distribution list.

Code: Select all

~/libexec/zmmsgtrace -s myuser@mydomain -r mydistribution@mydomain /var/log/zimbra.log-20211125.gz | grep originally | wc -l # Result: 1034
I don't understand why it is missing like that when sending email.

I have tried many times with command:

Code: Select all

zmprov gdl mydistribution@mydomain | grep zimbraMailForwardingAddress | awk '{print $2} ' | wc -l # Result: 1620 
It is full for 1620 people.

Please give me advice how to send to distribution and everyone in that distribution can receive my email. Or How can I trouble shot what exactly the problem was?

Thank you.
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gabrieles
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Posts: 233
Joined: Tue Feb 14, 2017 9:40 am

Re: Send mail to distribution list but not enough members

Post by gabrieles »

postfix virtual_alias_expansion_limit is limited to 1000 recipients by default
cuong.phan1
Posts: 2
Joined: Sun Nov 28, 2021 4:57 pm

Re: Send mail to distribution list but not enough members

Post by cuong.phan1 »

Many thanks to Gabrieles for your answer.

I tested today adjusting virtual_alias_expansion_limit to the value 2000. But it still doesn't seem to work. :cry:

Code: Select all

#sudo postconf virtual_alias_expansion_limit
virtual_alias_expansion_limit = 2000

Code: Select all

 ~/libexec/zmmsgtrace -s myuser@mydomain -r mydistribution@mydomain | grep origin | wc -l
907
It should be equal to the number of members in the distribution list of 1620 people. :roll:
Which doesn't seem to be any better than before the adjustment. Do you have any further clarifications or suggestions?

Thank you very much.
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ccelis5215
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Posts: 632
Joined: Sat Sep 13, 2014 2:04 am
Location: Caracas - Venezuela
ZCS/ZD Version: 8.8.15.GA.3869.UBUNTU18.64 P12

Re: Send mail to distribution list but not enough members

Post by ccelis5215 »

cuong.phan1 wrote:Many thanks to Gabrieles for your answer.

I tested today adjusting virtual_alias_expansion_limit to the value 2000. But it still doesn't seem to work. :cry:

Code: Select all

#sudo postconf virtual_alias_expansion_limit
virtual_alias_expansion_limit = 2000

Code: Select all

 ~/libexec/zmmsgtrace -s myuser@mydomain -r mydistribution@mydomain | grep origin | wc -l
907
It should be equal to the number of members in the distribution list of 1620 people. :roll:
Which doesn't seem to be any better than before the adjustment. Do you have any further clarifications or suggestions?

Thank you very much.
Hi, take a look https://wiki.zimbra.com/wiki/Postconf_keys

ccelis
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