problem receiving incoming email with attachements

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Aidajafer
Posts: 5
Joined: Mon Jan 14, 2019 5:03 pm

problem receiving incoming email with attachements

Post by Aidajafer »

Hi all,
I am new to this forum, but I have been managing zimbra mail server for some time now.
I have this problem that i need help. The mail server i am managing (production server) was doing fine, of recently, attachements within
incoming emails, from external domains are no longer seen in those emails. It is as if they have been removed somehow.
so whenever someone sends email with attachements are delivered successfully, but without attachements.
Please help me to understand and solve this issue. I am using zimbra collaboration network edition 8.8.10
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DualBoot
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Re: problem receiving incoming email with attachements

Post by DualBoot »

Hello,

maybe a mail system filtering is dropping attachment silently ?

Regards,
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msquadrat
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Re: problem receiving incoming email with attachements

Post by msquadrat »

This sounds like [bug]109103[/bug]
Aidajafer
Posts: 5
Joined: Mon Jan 14, 2019 5:03 pm

Re: problem receiving incoming email with attachements

Post by Aidajafer »

after i inspected headers carefully, i came to realise that amavis was throwing " BAD HEADER SECTION, Improper use of control character (char 0Dhex)".
Zimbra support helped us to workaround the issue
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DualBoot
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Re: problem receiving incoming email with attachements

Post by DualBoot »

How the Zimbra Support help ?
Aidajafer
Posts: 5
Joined: Mon Jan 14, 2019 5:03 pm

Re: problem receiving incoming email with attachements

Post by Aidajafer »

zimbra support edited configuration to pass bad headers
Aidajafer
Posts: 5
Joined: Mon Jan 14, 2019 5:03 pm

Re: problem receiving incoming email with attachements

Post by Aidajafer »

open /opt/zimbra/conf/amavisd.conf.in file, added the following line

$allowed_header_tests{‘control’} = 0;

restart the amavis service zmamavisdctl restart
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DualBoot
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Re: problem receiving incoming email with attachements

Post by DualBoot »

Thank you for the tip.
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