thunderbird - Email couldn't send to Ubuntu email server - Ask Ubuntu


i have setup email server @ ubuntu. working fine. last time when send email email server (myownemailid@mydomain.com) yahoo email, following error message @ yahoo email.

152.128.242.58 failed after sent message. remote host said: 552 5.3.4 error: message file big

i understand in email server there not enough memory space. new linux servers. don't know how fix problem @ email server.

most email systems place limit on size of emails, , many times limit exceeded email attachments. 10g typical limit. error can come email server, or yahoo's email server.

assuming you're running postfix mail server, in terminal, go /etc/postfix, , edit main.cf. line mailbox_size_limit =, , message_size_limit=. these set limits email server. 0 means unlimited.

or, using postconf -d command in terminal show current settings. postconf -d | grep -i size show parameters you're interested in. in config (not server), defaults are:

mailbox_size_limit = 51200000 message_size_limit = 10240000

postconf -e 'message_size_limit = 10240000' sets 10g. set higher, if wish.

you'll need restart postfix after changing these settings.


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