# Email on IEC

## Postfix

Mail pipeline looks like:

* `smtp` (port 25) and `submission` (port 587) smtpds run with `-o content_filter=spamassassin`

## ClamAV

At present, clamd needs ~ 1.3 GB of RAM, bursting to twice that during signature updates. This is causing it to regularly go out of memory each day:

Sep 15 17:02:47 iec kernel: Out of memory: Killed process 4085007 (clamd) total-vm:1854724kB, anon-rss:1579144kB, file-rss:0kB, shmem-rss:0kB, UID:115 pgtables:3264kB oom_score_adj:0
Sep 15 17:01:48 iec kernel: Out of memory: Killed process 4066157 (clamd) total-vm:1625844kB, anon-rss:1355248kB, file-rss:0kB, shmem-rss:0kB, UID:115 pgtables:2820kB oom_score_adj:0
Sep 14 17:01:09 iec kernel: Out of memory: Killed process 4042572 (clamd) total-vm:1866520kB, anon-rss:1589140kB, file-rss:0kB, shmem-rss:0kB, UID:115 pgtables:3288kB oom_score_adj:0
Sep 14 17:00:39 iec kernel: Out of memory: Killed process 4022424 (clamd) total-vm:1625928kB, anon-rss:1352028kB, file-rss:0kB, shmem-rss:0kB, UID:115 pgtables:2820kB oom_score_adj:0
Sep 13 17:28:16 iec kernel: Out of memory: Killed process 3996755 (clamd) total-vm:1863532kB, anon-rss:1589940kB, file-rss:0kB, shmem-rss:0kB, UID:115 pgtables:3272kB oom_score_adj:0
Sep 13 17:27:17 iec kernel: Out of memory: Killed process 3976000 (clamd) total-vm:1625928kB, anon-rss:1351752kB, file-rss:0kB, shmem-rss:0kB, UID:115 pgtables:2816kB oom_score_adj:0

Memory is likely to continue increasing as the signature database grows over time.