Hi Jakob, I ran into this issue some weeks ago after updating to latest LTS Ubuntu (Exim 4.90.1-1ubuntu1). Tracked this down to sa-exim which is screwing up things as soon as more than one message is delivered over one connection. By looking at the spool files I saw that random data was missing/inserted.
On 26.07.2018 13:33, Jakobus Schürz via Exim-users wrote: > Hi there! > > I get a lot of this errors: > > 4d 6.6K 1fhLuL-0003Kp-6q <systemd-devel-boun...@lists.freedesktop.org> > *** spool format error: size=7871 *** > jakob@localhost Similar, to what I saw in my system. Usually the random data was inserted in the sa-exim header line which listed the hosts, where scanning was performed. > I use btrfs as filesystem. But scrubbing the filesystem ends without any > error. I initially thought of fs corruptions as well, but found no evidence. > I have exim4 4.91-5 from debian/buster. > > Maybe it is a problem of exim? Or does it com from spamassassin? It is most likely the sa-exim module. I did some tests and was not able to get it to run reliably. Limiting exim to accept only one message per connection was no option for my setup (too much traffic), it might be for you. I tried greylistd as alternative, however was not very satisfied (no easy dependency on spamassassin scores, only time-based whitelisting, stability issues, not very robust in regards of alternating IP adresses most big providers use, esp. for IPv6). Finally just configured exim to do spam checks via spamassassin and reject for scores >= 6.0. Works with acceptable SPAM rejection (more or less no SPAM in mailboxes) and is rock-solid stable. hth, Thomas -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/