NethServer Version: 7.6
Module: Dovecot
I don’t seem to be able to send mail from Thunderbird anymore. I checked the SMTP settings in TBird, but they are ok.
I also don’t receive mail from external mailadresses. I do receive server mails (like fail2ban) that I configured to send to my mailbox.
I am getting quite some messages in Dovecot log similar to this:
dovecot: imap(rob@domain.tld): Error: mmap(size=3965655700) failed with file /var/lib/nethserver/vmail/rob@domain.tld/Maildir/dovecot.index.cache: Cannot allocate memory
In mail.log I see this when trying to send an email from thunderbird:
Mar 15 12:03:54 ns7 postfix/qmgr[5652]: 423E7800145: from=<rob@domain.tld>, size=3957, nrcpt=1 (queue active) Mar 15 12:03:55 ns7 postfix/smtp[24436]: Untrusted TLS connection established to mx01.emig.gmx.net[212.227.17.5]:25: TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits) Mar 15 12:03:55 ns7 postfix/smtp[24436]: 423E7800145: host mx01.emig.gmx.net[212.227.17.5] said: 451 Requested action aborted: local error in processing (in reply to MAIL FROM command) Mar 15 12:03:55 ns7 postfix/smtp[24436]: Untrusted TLS connection established to mx00.emig.gmx.net[212.227.15.9]:25: TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits) Mar 15 12:03:55 ns7 postfix/smtp[24436]: 423E7800145: to=<username@gmx.net>, relay=mx00.emig.gmx.net[212.227.15.9]:25, delay=400, delays=399/0.02/0.41/0.65, dsn=4.0.0, status=deferred (host mx00.emig.gmx.net[212.227.15.9] said: 451 Requested action aborted: local error in processing (in reply to MAIL FROM command))
It looks like some memory allocation problem. However the total amount of available memory is more than sufficient. Also the total mailbox size is not that horrific (400MB) that it should not work. The max mailbox size on the server is set to 15GB.
Any troubleshooting help is appreciated…